Stihl 017 018 Manual

STIHL 017 018

Instruction Manual

Owner’s Manual

Assembling

Safety Precautions

Operating Instructions

Maintenance

Warning!

To reduce risk of kickback injury use STIHL reduced kickback

3 3

bar and STIHL PMN ( ⁄8 ꢀ Picco) or PM 1 ( ⁄8 ꢀ Picco) chain depending

Read and follow all safety precautions

in Owner’s Manual – improper use

can cause serious or fatal injury.

on sprocket pitch or other available low kickback components.

Important Safety Precautions for Chain Saw Users

A. Kickback Safety Precautions

Warning!

take several steps to keep your

cutting jobs free from accident or

injury.

6. Follow manufacturer’s

sharpening and maintenance

instructions for the saw chain.

Kickback may occur when the nose

or tip of the guide bar touches an

object, or when the wood closes in

and pinches the saw chain in the

cut. Tip contact in some cases may

cause a lightning fast reverse

reaction, kicking the guide bar up

and back towards the operator.

Pinching the saw chain along the

top of the guide bar may push the

guide bar rapidly back towards the

operator. Either of these reactions

may cause you to lose control of the

saw which could result in serious

personal injury.

With a basic understanding of

kickback, you can reduce or eli-

minate the element of surprise.

Sudden surprise contributes to

accidents.

7. Only use replacement bars and

chains specified by the manu-

facturer or the equivalent.

8. Reduced kickback bars and low

kickback chains are designed

to reduce the risk of kickback

injury. Ask your STIHL dealer

about these devices.

Keep a good firm grip on the

saw with both hands, the right

hand on the rear handle,

and the left hand on the front

handle, when the engine is run-

ning. Use a firm grip with

thumbs and fingers encircling

the chainsaw handles.

B. Other Safety Precautions

1. Do not operate a chainsaw with

one hand! Serious injury to the

operator, helpers, bystanders,

or any combination of these

persons may result from one-

handed operation. A chainsaw

is intended to be used with two

hands.

A firm grip will help you reduce

kickback and maintain control

of the saw.

Section 5.12 of ANSI B 175.1-1991

sets certain performance and

design criteria related to chainsaw

kickback. STIHL has developed a

color code system using green and

yellow to help you select a power-

head, bar and chain combination

that complies with the kickback

requirements of the ANSI Standard.

See the sections entitled "Safety

Precautions" and "Specifications"

of this manual.

Don’t let go.

Make sure the area in which you

are cutting is free from obstruc-

tions. Do not let the nose of the

guide bar contact a log, branch,

or any other obstruction while

you are operating the saw.

2. Do not operate a chainsaw when

you are fatigued.

3. Use safety footwear; snug-fitting

clothing; protective gloves; and

eye, hearing, and head protect-

ion devices.

Cut at high engine speeds.

Do not overreach or cut above

shoulder height.

Do not rely exclusively upon the

safety devices built into your saw.

As a chainsaw user, you should

continued on the back inside cover

Contents

Main Parts of the Saw

Definitions

During Operation

This manual contains operating and

safety instructions for all STIHL 017, 018

series chainsaws.

After Finishing Work

Cleaning Air Filter

Safety Precautions

The Operator

Taking Care of Guide Bar

Motormanagement

Pay special attention to the safety

precautions outlined on the inside cover

and on pages 4 to 24.

The Saw

The Use of the Saw

Maintenance, Repair and Storing

Adjusting Carburetor

Spark Arresting Screen in Muffler

Checking Spark Plug

Starter Rope

Allow only persons who understand this

Manual to operate your chainsaw.

To receive maximum performance and

satisfaction from your STIHL chainsaw,

it is important that you read and under-

stand the maintenance and safety

precautions before using your saw.

Contact your STIHL dealer or the

STIHL distributor for your area if you do

not understand any of the instructions in

this Manual.

Mounting the Bar and Chain:

Models with Quick Chain Tensioner* 26

Tensioning the Saw Chain

Checking Chain Tension

Fuel Mix

Checking and Replacing Chain

Sprocket

Storing the Machine

Maintaining and Sharpening

Saw Chain

Fueling

Chain Lubricant

Filling Chain Oil Tank

Checking Chain Lubrication

Chain Brake

Maintenance Chart

Specifications

Ordering Spare Parts

Stihl Incorporated Limited Warranty

Federal and California Emission

Control Systems Utility Engines

Information Before You Start

Starting

During Break-in Period

Warning!

Because a chainsaw is a high-speed

wood-cutting tool, some special safety

precautions must be observed as with

any other power saw to reduce the risk of

personal injury. Careless or improper use

may cause serious or even fatal injury.

STIHL’s philosophy is to continually

improve all of its products. As a result,

engineering changes and improvements

are made from time-to-time. If the opera-

ting characteristics or the appearance of

your saw differ from those described in

this Manual, please contact your STIHL

dealer for information and assistance.

Special equipment

Printed on chlorine-free paper

2000 Andreas Stihl AG & Co., Waiblingen

458 143 3021. M5. C0. PM. Printed in USA

017, 018

Main Parts of the Saw

= Twist lock

= Spark plug boot

= Decompression valve *

= Chain brake

= Chain sprocket

= Chain sprocket cover

7 = Chain catcher

= Chain tensioner

= Adjusting wheel of quick tensioner *

0 = Bumper spike

11 = Guide bar

12 = Oilomatic saw chain

3 = Oil filler cap

4 = Muffler

5 = Front hand guard

6 = Front handle (handlebar)

7 = Starter grip

8 = Fuel filler cap

9 = Master Control lever

0 = Throttle trigger

21 = Throttle trigger interlock

2 = Rear handle

3 = Rear hand guard

* Special accessory

017, 018

Definitions

Carburetor Box Cover Twist Lock

11. Guide Bar

Supports and guides the saw chain.

21. Throttle Trigger Interlock

Must be depressed before the

throttle trigger can be activated.

Lock for carburetor box cover.

Spark Plug Boot

12. Oilomatic Saw Chain

A loop consisting of cutters, tie

straps and drive links.

Connects the spark plug with the

ignition wire.

22. Rear Handle

The support handle for the right

hand, located at or toward the

rear of the saw.

Decompression Valve

13. Oil Filler Cap

Releases compression pressure to

make starting easier.

For closing the oil tank.

23. Rear Hand Guard

Gives added protection to

operator’s right hand.

14. Muffler

Reduces engine exhaust noise and

directs the exhaust gases.

Chain Brake

A device to stop the rotation of the

chain if activated in a kickback

situation by the operator’s hand or

by inertia.

Guide Bar Nose

15. Front Hand Guard

The exposed end of the guide bar.

Provides protection against

projecting branches and helps

prevent left hand from touching the

chain if it slips off the handle bar.

It also serves as the lever for chain

brake activitation

(

not illustrated, see chapter

Chain Sprocket

“Tensioning the Saw Chain”).

The toothed wheel that drives the

saw chain.

Clutch

Couples engine to chain sprocket

when engine is accelerated beyond

idle speed.

Chain Sprocket Cover

Covers the clutch and the sprocket.

6. Front Handle

(not illustrated).

Handle bar for the left hand at

front of saw.

Chain Catcher

Helps to reduce the risk of operator

contact by a chain when it breaks

or comes off the bar.

Anti-Vibration System

The anti-vibration system includes

a number of buffers designed to

reduce the transmission of

vibrations created by the engine and

cutting attachment to the

7. Starter Grip

The grip of the starter, for starting

the engine.

Chain Tensioner

Permits precise adjustment of chain

tension.

18. Fuel Filler Cap

For closing the fuel tank.

operator’s hands.

(not illustrated).

Adjusting Wheel

19. Master Control Lever

Lever for choke control,

starting throttle, run and

stop switch position.

Permits precise adjustment of chain

tension.

0. Bumper Spike

Toothed stop for holding saw steady

against wood.

20. Throttle Trigger

Controls the speed of the engine.

17, 018

Safety Precautions

The use of any chainsaw

Have your STIHL dealer show you how

to operate your chainsaw. Observe all

applicable local safety regulations,

standards and ordinances.

Safe use of a chainsaw involves

may be hazardous.

The saw chain has many

1. the operator

2. the saw

sharp cutters. If the

cutters contact your flesh,

3. the use of the saw.

they will cut you, even if the chain is not

moving. At full throttle, the chain speed

can reach 45 mph (20 m/s). It is impor-

tant that you read, fully understand

and observe the following safety precau-

tions and warnings. Read the Owner’s

Manual and the safety instructions

periodically.

Warning!

Minors should never be allowed to use a

chainsaw. Bystanders, especially

THE OPERATOR

children, and animals should not be

allowed in the area where a chainsaw is

in use. Never let the saw run unattended.

Store it in a locked place away from

children and empty the fuel tank before

storing for longer than a few days.

Physical Condition

You must be in good physical condition

and mental health and not under the

influence of any substance (drugs,

alcohol) which might impair vision,

dexterity or judgment.

Pay special attention to the section on

reactive forces.

Do not lend or rent your

chainsaw without the

Do not operate a chainsaw when you are

fatigued. Be alert – If you get tired while

operating your chainsaw, take a break.

Tiredness may result in loss of control.

Working with any chainsaw can be

strenuous. If you have any condition that

might be aggravated by strenuous work,

check with your doctor before operating

a chainsaw.

Warning!

Owner‘s Manual. Be sure

that anyone using your

Reactive forces, including kickback, can

be dangerous. Careless or improper use

of any chainsaw may cause serious or

fatal injury.

saw reads and under-

stands the information contained in this

manual.

All safety precautions that are generally

observed when working with an ax or a

hand saw also apply to the operation of

chainsaws. However, because a chain-

saw is a high-speed, fast-cutting power

tool, special safety precautions must be

observed to reduce the risk of personal

injury.

These safety precautions and warnings

apply to the use of all STIHL chainsaws.

Different models may have different

parts and controls. See the appropriate

section of your Owner’s Manual for a

description of the controls and function

of the parts of your model saw.

Warning!

Prolonged use of chainsaws (or other

machines) exposing the operator to

vibrations may produce whitefinger

disease (Raynaud’s phenomenon) or

carpal tunnel syndrome. These conditions

reduce the hand’s ability to feel and

regulate temperature, produce numb-

ness and burning sensations and may

cause nerve and circulation damage and

tissue necrosis.

–

Keep the saw chain sharp and the

saw, including the AV system, well

maintained. A dull chain will in-

crease cutting time, and pressing a

dull chain through wood will in-

crease the vibrations transmitted to

your hands. A saw with loose com-

ponents or with damaged or worn

AV buffers will also tend to have

higher vibration levels.

Clothing must be sturdy

and snug-fitting, but allow

complete freedom of

movement. Avoid loose-

fitting jackets, scarfs,

neckties, jewelry, flared or cuffed pants,

unconfined long hair or anything that

could become entangled with the saw or

brush. Wear overalls or jeans with a

reinforced cut retardant insert or cut

retardant chaps.

All factors which contribute to whitefinger

disease are not known, but cold weather,

smoking and diseases or physical condi-

tions that affect blood vessels and blood

transport, as well as high vibration levels

and long periods of exposure to vibration

are mentioned as factors in the develop-

ment of whitefinger disease. In order to

reduce the risk of whitefinger disease

and carpal tunnel syndrome, please

note the following:

Maintain a firm grip at all times, but

do not squeeze the handles with

constant, excessive pressures.

Take frequent breaks.

Protect your hands with

gloves when handling

saw and saw chain.

Heavyduty, nonslip

All the above mentioned precautions do

not guarantee that you will not sustain

whitefinger disease or carpal tunnel

syndrome. Therefore, continual and

regular users should monitor closely the

condition of their hands and fingers.

If any of the above symptoms appear,

seek medical advice immediately.

gloves improve your grip

and protect your hands.

–

Many STIHL models are available

with an anti-vibration (“AV”) system

designed to reduce the transmission

of vibrations created by the engine

and cutting attachment to the

operator’s hands. An AV system is

recommended for those persons

using chainsaws on a regular or

sustained basis.

Good footing is most

important in chainsaw

work. Wear sturdy boots

with nonslip soles.

Steel-toed safety boots

are recommended.

Proper Clothing

To reduce the risk of injury to your eyes

never operate a chainsaw unless

wearing goggles or properly fitted safety

glasses with adequate top and side

protection complying with your national

standard.

–

Wear gloves and keep your hands

warm. Heated handles, which are

available on most STIHL power-

heads, are recommended for cold

weather use.

Warning!

To reduce the risk of injury, the operator

should wear proper protective apparel.

Wear an approved safety

hard hat to protect your

THE USE OF THE SAW

head. Chainsaw noise

Transporting the chainsaw

may damage your

hearing. Always wear

sound barriers (ear plugs

Warning!

or ear mufflers) to protect your hearing.

Continual and regular users should have

their hearing checked regularly.

Always stop the engine before putting a

chainsaw down or carrying it. Carrying a

chainsaw with the engine running is

extremely dangerous.

THE SAW

Accidental acceleration of the engine

can cause the chain to rotate. During

operation, the powerhead muffler and

the material around it reach extremely

high temperatures. Avoid touching the

hot muffler, you could receive serious

burns.

Parts of the chainsaw; for illustrations

and definitions of the parts see the

chapter on “Main Parts of Saw”.

Warning!

Never modify a chainsaw in any way.

Only attachments and parts supplied by

STIHL or expressly approved by STIHL

for use with the specific STIHL saw

models are authorized. Although certain

unauthorized attachments are useable

with the STIHL powerhead, their use

may, in fact, be extremely dangerous.

By hand: When carrying your saw by

hand, the engine must be stopped and

the saw must be in the proper position.

The chain guard (scabbard) should be

over the chain and the guide bar, which

should point backwards. When carrying

your saw, the bar should be behind you.

Grip the front handle and place the

muffler away from the body.

By vehicle: When transporting in a

vehicle, keep chain and bar covered with

the chain guard. Properly secure your

saw to prevent turnover, fuel spillage

and damage to the saw.

Preparation for the use of the saw

and thereafter at regular intervals (when-

ever the saw is shut off). If the chain

becomes loose while cutting, shut off the

engine and then tighten. Never try to

tighten the chain while the engine is

running!

Fueling Instructions

Warning!

Take off the chain guard and inspect for

safety in operation. For assembly, follow

the procedure described in the chapter

Fuel your chainsaw in well-ventilated

areas, outdoors only. Always shut off the

engine and allow it to cool before refue-

ling. Gasoline vapor pressure may build

up inside the gas tank of a two cycle

engine depending on the fuel used, the

weather conditions, and the venting

system of the tank. In order to reduce

the risk of burns or other personal injury

from escaping gas vapor and fumes,

remove the fuel filler cap on the STIHL

product carefully so as to allow any

pressure build-up in the tank to release

slowly. Never remove fuel filler cap while

engine is running.

“

Mounting the Bar and Chain” of your

Owner’s Manual.

STIHL Oilomatic chain, guide bar and

sprocket must match each other in

gauge and pitch.

Fueling

Your STIHL chainsaw uses an oil-gaso-

line mixture for fuel (see chapter “Fuel”

of your Owner’s Manual).

Before replacing any bar and chain,

see the sections on “Specifications”,

Kickback" and the "ANSI B 175.1-1991

chainsaw kickback standard" in this

manual.

Warning!

Gasoline is an extremely flammable fuel.

If spilled or ignited by a spark or other

ignition source, it can cause fire and

serious burn injury or property damage.

Use extreme caution when handling

gasoline or fuel mix.

Warning!

Select bare ground for fueling and move

at least 10 feet (3 m) from fueling spot

before starting the engine. Wipe off any

spilled fuel before starting your saw, and

check for leakage.

Proper tension of the chain is extremely

important. In order to avoid improper

setting, the tensioning procedure must

be followed as described in your manual.

Always make sure the hexagonal nut(s)

for the sprocket cover is (are) tightened

securely after tensioning the chain.

Do not smoke or bring

any fire or flame near the

fuel or the chainsaw.

Note that combustible

fuel vapors may be vented

from the fuel system.

Warning!

Never start the saw with the sprocket

cover loose. Check chain tension once

more after having tightened the nut(s)

Check for fuel leakage while refueling

and during operation. If fuel or oil leakage

is found, do not start or run the engine

until leak is fixed and spilled fuel has

been wiped away. Take care not to get

fuel on your clothing. If this happens,

change your clothing immediately.

Warning!

Unit vibrations can cause an improperly

tightened fuel filler cap to loosen or come

off and spill quantities of fuel. In order to

reduce the risk of fuel spillage and fire,

tighten fuel filler cap by hand with as

much force as possible.

The screwdriver end of

the STIHL combination

wrench or other similar

tool can be used as an aid

in tightening slotted fuel

filler caps.

Starting

The chain brake must be engaged when

starting the saw.

With the first method, the chainsaw is

started on the ground. Make sure the

chain brake is engaged (see “Chain

Brake” chapter in your Owner’s Manual)

and place the chainsaw on firm ground

or other solid surface in an open area.

Maintain good balance and secure

footing.

The second recommended method for

starting your chainsaw allows you to start

the saw without placing it on the

Warning!

Your chainsaw is a one-person saw.

Do not allow other persons to be near

the running chainsaw. Start and operate

your saw without assistance. For specific

starting instructions, see the appropriate

section of the Owner’s Manual. Proper

starting methods reduce the risk of injury.

Do not drop start. This method is very

dangerous because you may lose control

of the saw.

ground. Make sure the chain brake is

engaged, grip the front handle of the

chainsaw firmly with your left hand.

Keep your arm on the front handle in a

locked (straight) position. Hold the rear

handle of the saw tightly between your

legs just above the knees. Maintain good

balance and secure footing. Pull the

starting grip slowly with your right hand

until you feel a definite resistance and then

give it a brisk, strong pull.

Grip the front handlebar of the saw firmly

with your left hand and press down.

For saws with a rear handle level with

the ground, put the toe of your right foot

into the rear handle and press down.

With your right hand pull out the starter

grip slowly until you feel a definite

resistance and then give it a brisk,

strong pull.

There are two recommended methods

for starting your chainsaw.

Important adjustments

Warning!

To reduce the risk of personal injury from

loss of control or contact with the

running chain, do not use a saw with

incorrect idle adjustment. At correct idle

speed, the chain should not rotate. For

directions to adjust idle speed, see the

appropriate section of your Owner’s

Manual. If you cannot set the correct idle

speed, have your STIHL dealer check

your saw and make proper adjustments

or repairs.

To reduce the risk of serious or fatal

injury from breathing toxic fumes, never

run the chainsaw indoors or in poorly

ventilated locations. Ensure proper venti-

lation when working in trenches or other

confined areas.

Warning!

Be sure that the guide bar and chain are

clear of you and all other obstructions

and objects, including the ground. When

the engine is started, the engine speed

with the starting throttle lock engaged

will be fast enough for the clutch to

engage the sprocket and, if the chain-

brake is not activated, turn the chain.

If the upper quadrant of the tip of the bar

touches any object, it may cause kick-

back to occur (see section on reactive

forces). To reduce this risk, always

!WWarning!

Use of this product (including sharpen-

ing the saw chain) can generate dust,

mists and fumes containing chemicals

known to cause respiratory disease, can-

cer, birth defects, or other reproductive

harm. If you are unfamiliar with the risks

associated with the particular dust, mist

or fume at issue, consult your employer,

governmental agencies such as OSHA

and NIOSH and other sources on hazar-

dous materials. California and some

other authorities, for instance, have pub-

lished lists of substances known to cause

cancer, reproductive toxicity, etc.

engage the chain brake before starting.

Never attempt to start the chainsaw

when the guide bar is in a cut or kerf.

After adjusting a chain, start the saw, let

the engine run for a while, then switch

engine off and recheck chain tension.

Proper chain tension is very important at

all times.

Warning!

When you pull the starter grip, do not

wrap the starting rope around your

hands. Do not allow the grip to snap

back, but guide the starter rope slowly

back to permit the rope to rewind

Working Conditions

Operate the chainsaw under good

visibility and daylight conditions only.

Control dust (such as sawdust), mists

properly. Failure to follow this procedure

may result in injury to hand or fingers

and may damage the starter mechanism.

(

such as oli mist from chain lubrication)

Warning!

and fumes at the source where possible.

In this regard use good work practices

and follow the recommendations of

OSHA / NIOSH and occupational and

trade associations. When the inhalation

of toxic dust, mists and fumes cannot be

Your chainsaw produces

poisonous exhaust fumes

as soon as the combusti-

ble engine is running.

These gases (e.g. carbon

monoxide) may be colorless and odor-

less.

eliminated, the operator and any by-

standers should always wear a respirator

approved by NIOSH / MSHA for the type

substance at issue.

hot. Don’t work alone. Keep within calling

distance of others in case help is

needed.

Warning!

Avoid stumbling on obstacles such as

stumps, roots or rocks and watch out for

holes or ditches. Clear the area where

you are working. Be extremely cautious

when working on slopes or uneven

ground. There is increased danger of

slipping on freshly debarked logs.

Your chainsaw is equipped with a chain

catcher. It is designed to reduce the risk

of personal injury in the event of a thrown

or broken chain. From time to time the

catcher may be damaged or removed.

To reduce the risk of personal injury,

do not operate a chainsaw with a

Warning!

Breathing asbestos dust is dangerous

and can cause severe or fatal injury, re-

spiratory illness or cancer. The use and

disposal of asbestos containing products

have been strictly regulated by OSHA

and the Environmental Protection Agen-

cy. Do not cut or disturb asbestos, asbe-

stos containing products (e.g. asbestos

containing drywall or other construction

products), or products such as pipes

which are wrapped or covered with asbe-

stos insulation. If you have any reason

to believe that you might be cutting asbe-

stos, immediately contact your employer

or a local OSHA representative.

^!Warning!

damaged or missing catcher.

To reduce the risk

of serious or fatal

Inspect buffers periodically. Replace

damaged, broken or excessively worn

buffers immediately, since they may

result in loss of control of the saw.

injury to the opera-

tor or bystanders,

never use the saw

with one hand.

You cannot control reactive forces and

you may lose control of the saw, which

can result in the skating or bouncing of

the bar and chain along the limb or log.

A “sponginess” in the feel of the saw,

increased vibration or increased

“bottoming” during normal operation

may indicate damage, breakage or

excessive wear. Buffers should always

be replaced in sets. If you have any

questions as to whether the buffers

should be replaced, consult your STIHL

servicing dealer.

Even for those compact saws designed

for use in confined spaces, one-handed

operation is dangerous because the

operator may lose control.

The muffler and other parts of the engine

(

e.g. fins of the cylinder, spark plug)

become hot during operation and remain

hot for a while after stopping the engine.

To reduce risk of burns do not touch the

muffler and other parts while they are

Warning!

Take extreme care in wet and freezing

weather (rain, snow, ice). Put off the

work when the weather is windy, stormy

or rainfall is heavy.

Cutting Instructions

Grip: Always hold the saw firmly with

both hands when the engine is running.

Place your left hand on front handle bar

and your right hand on rear handle and

throttle trigger. Left-handers should

follow these instructions too.

Warning!

Never touch a chain with your hand or

any part of your body when the engine is

running, even when the chain is not

rotating. The chain continues to rotate

for a short period after the throttle trigger

is released.

Wrap your fingers tightly around the

handles, keeping the handles cradled

between your thumb and forefinger.

With your hands in this position, you can

best oppose and absorb the push, pull

and kickback forces of your saw without

losing control (see section on reactive

forces). Make sure your chainsaw

Warning!

Do not cut any material other than wood

or wooden objects.

Never work on a ladder, or on any other

insecure support. Never use the saw

above shoulder height.

Use your chainsaw for cutting only.

It is not designed for prying or shoveling

away limbs, roots or other objects.

When sawing, make sure that the saw

chain does not touch any foreign

materials such as rocks, fences, nails

and the like.

Warning!

handles and grip are in good condition

and free of moisture, pitch, oil or grease.

Never work in a tree unless you have

received specific, professional training

for such work, are properly secured

(such as tackle and harness system or a

Such objects may be flung off, damage

the saw chain or cause the saw to

kickback.

Warning!

lift bucket), have both hands free for

operating the chainsaw in a cramped

environment and have taken proper

precautions to avoid injury from falling

limbs or branches.

Do not operate your chainsaw with the

starting throttle lock engaged. Cutting

with the starting throttle lock engaged

does not permit the operator proper

control of the saw or chain speed.

Warning!

In order to keep control of your saw,

always maintain a firm foothold.

Position the chainsaw in such a way that

your body is clear of the cutting attach-

ment whenever the engine is running.

Stand to the left of cut while bucking.

powerful force used to cut wood can be

reversed (and work against the opera-

tor). If the rotating chain is suddenly

stopped by contact with any solid object

like a log or branch or is pinched, the

reactive forces may occur instantly.

These reactive forces may result in loss

of control which may, in turn, cause

serious or fatal injury. An understanding

of the causes of these reactive forces

may helpyou avoid loss of control.

Don’t put pressure on the saw when

reaching the end of a cut. The pressure

may cause the bar and rotating chain to

pop out of the cut or kerf, go out of

control and strike the operator or some

other object. If the rotating chain strikes

some other object, a reactive force may

cause the moving chain to strike the

operator.

The reaction of the cutting force of the

chain causes a rotational force on the

chainsaw in the direction opposite to the

chain movement. This may fling the bar

up and back in an uncontrolled arc

mainly in the plane of the bar. Under

some cutting circumstances the bar

moves towards the operator, who may

suffer severe or fatal injury.

The most common reactive forces are

– kickback,

–

pushback,

pull-in.

Reactive forces including kickback

Kickback:

Warning!

Kickback may occur when

the moving saw chain

Reactives forces may occur any time the

chain is rotating. Reactives forces can

be dangerous! In any chainsaw, the

near the upper quadrant of

the bar nose contacts a

solid object or is pinched.

Kickback may occur when the nose of

the guide bar is pinched unexpectedly,

unintentionally contacts solid material in

the wood or is incorrectly used to begin

a plunge or boring cut.

It may also occur during limbing.

a) saws with a displacement of less than angles that may occur in real life cutting

The greater the force of the kickback

reaction, the more difficult it becomes for

the operator to control the saw. Many

factors influence the occurrence and

force of the kickback reaction. These

include chain speed, the speed at which

the bar and chain contact the object, the

angle of contact, the condition of the

chain and other factors.

3.8 cubic inches

situations. Compliance with § 5.12 of

ANSI B 175.1-1991 does not automatic-

ally mean that in a real life kickback the

bar and chain will rotate at most 45°.

–

must, in their original condition,

meet a 45° computer derived

kickback angle when equipped with

certain cutting attachments.

and must be equipped with at least

two devices to reduce the risk of

kickback injury, such as a chain

brake, low kickback chain, reduced

kickback bar, etc.

–

Warning!

In order for powerheads below 3.8 cubic

inch displacement to comply with the

computed kickback angle requirements

of § 5.12 of ANSI B 175.1-1991 use only

the following cutting attachments:

The type of bar and saw chain you use

is an important factor in the occurrence

and force of the kickback reaction.

b) saws with a displacement of 3.8 cubic

inches and above

–

bar and chain combinations listed as

complying in the “Specifications”

section of the Owner’s Manual or

other replacement bar and chain

combinations marked in accordance

with the standard for use on the

powerhead or

Some STIHL bar and chain types are

designed to reduce kickback forces.

STIHL recommends the use of reduced

kickback bars and low kickback chains.

–

must be equipped with at least one

device designed to reduce the risk

of kickback injury such as a chain

brake, low kickback chain, reduced

kickback bar, etc.

–

ANSI B 175.1-1991 chainsaw kickback

standard

The computer derived angles for saws

below 3.8 cubic inch displacement are

measured by applying a computer

program to test results from a kickback

test machine.

–

replacement chain designated

“low kickback saw chain’’.

See the section on "Low kickback saw

chain and reduced kickback bars"

Section 5.12 of ANSI standard B 175.1–

991, sets certain performance and

design criteria related to chainsaw

kickback.

To comply with section 5.12 of ANSI B

Warning!

175.1-1991:

The computer derived angles of § 5.12 of

ANSI B 175.1-1991 may bear no rela-

tionship to actual kickback bar rotation

Devices for reducing the risk of

kickback injury

Warning!

Never operate your chainsaw without a

front hand guard. In a kickback situation

this guard helps protect your left hand or

other parts of your body. In addition,

removal of the hand guard on a saw

equipped with a chain brake will deactivate

the chain brake.

STIHL recommends the use of the STIHL

Quickstop chain brake on your power-

head with green labeled reduced kick-

back bars and low kickback chains.

Warning!

To reduce the risk of injury, stop using

the saw immediately if the chain brake

does not function properly. Take the saw

to your local STIHL Service Centre! Do

not use the saw until the problem has

been rectified (see the section “Chain

Brake”).

Warning!

No Quickstop or other chain brake

device prevents kickback. These devices

are designed to reduce the risk of

kickback injury, if activated, in certain

kickback situations. In order for the

Quickstop to reduce the risk of kickback

injury, it must be properly maintained

and in good working order. See the

chapter entitled “Chain Brake” and

“Maintenance, Repair and Storing” of

your Owner’s Manual. In addition, there

must be enough distance between the

bar and the operator to ensure that the

Quickstop has sufficient time to activate

and stop the chain before potential

contact with the operator.

Quickstop chain brake

When a kickback occurs, the guide bar

may rotate around the front handle. If the

cutting position is such that the operator’s

left hand is gripping the front handle

behind the hand guard, and if the left

hand rotates around the front handle and

makes a sufficiently forceful contact with

the front hand guard, which is the Quick-

stop activating lever, this contact will

activate the Quickstop. The chain brake

on most new model STIHL chainsaws

can also be activated by inertia. See the

chapter entitled “Chain Brake” of your

Owner’s Manual.

STIHL has developed a chain stopping

system designed to reduce the risk of

injury in certain kickback situations.

It is called a Quickstop chain brake.

The Quickstop is available as standard

equipment on your STIHL chainsaw and

is available for installation on most older

STIHL saws. Ask your dealer to retrofit

your older model saw with a chain brake.

reduce the risk of kickback injury. Other

chains are designed to obtain higher cut-

ting efficiency or sharpening ease but

may result in higher kickback tendency.

Please ask your STlHL dealer to properly

match your powerhead with the appro-

priate bar/chain combinations to reduce

the risk of kickback injury. Green labeled

bars and chains are recommended for all

powerheads. See your “STIHL Bar and

Chain Information” leaflet for details.

Warning!

An improperly maintained chain brake

may increase the time needed to stop

the chain after activation, or may not

activate at all.

STIHL has developed a color code

system to help you identify the STIHL

reduced kickback bars and low kick-

back chains. Cutting attachments with

green warning decals or green labels on

the packaging are designed to reduce

the risk of kickback injury. The matching

of green decaled powerheads under 3.8

cubic inch displacement with green

labeled bars and green labeled chains

gives compliance with the computed

kickback angle requirements of ANSI B

Warning!

Never run the chainsaw above idle

speed for more than 3 seconds when

the chain brake is engaged or the chain

is pinched or otherwise caught in the cut.

Clutch slippage can cause excessive

heat, leading to severe damage of the

motor housing, clutch and oiler compo-

nent and may interfere with the operation

of the chain brake. If clutch slippage in

excess of 3 seconds has occured, allow

the motor housing to cool before pro-

ceeding and check the operation of your

chain brake as described in the chapter

entitled “Chain Brake”. Also make sure

that the chain is not turning at idle speed

Warning!

Use of other, non-listed bar/chain combi-

nations may increase kickback forces

and increase the risk of kickback injury.

New bar/chain combinations may be

developed after publication of this litera-

ture, which will, in combination with

certain powerheads, comply with § 5.12

of ANSI B 175.1-1991. Check with your

STIHL dealer for such combinations.

175.1-1991 when the products are in

their original condition. Products with

yellow decals or labels are for users with

extraordinary cutting needs and

experience and specialized training for

dealing with kickback.

Warning!

Reduced kickback bars and low kickback

chains do not prevent kickback, but they

are designed to reduce the risk of kick-

back injury. They are available from your

STIHL dealer.

(see above “Important Adjustments”).

STIHL recommends the use of its

green labeled reduced kickback bars,

green labeled low kickback chains

and a STIHL Quickstop chain brake

for both experienced and inexpe-

rienced chainsaw users.

Low kickback saw chain and reduced

kickback bars"

STIHL offers a variety of bars and

Warning!

chains. STIHL reduced kickback bars

and low kickback chains are designed to

Even if your saw is equipped with a

Quickstop, a reduced kickback bar

and/or low kickback chain, this does not

eliminate the risk of injury by kickback.

Therefore, always observe all safety

precautions to avoid kickback situations.

Low kickback chain

kickback energy. Improper lowering or

sharpening of the depth gauges or

shaping of the cutters may increase the

chance and the potential energy of a

kickback. Always cut with a properly

sharpened chain.

To avoid kickback

Some types of saw chain have specially

designed components to reduce the

force of nose contact kickback. STIHL

has developed low kickback chain for

your powerhead.

The best protection from personal injury

that may result from kickback is to avoid

kickback situations:

1. Hold the chainsaw firmly with both

hands and maintain a secure grip.

2. Be aware of the location of the guide

bar nose at all times.

“

Low kickback saw chain” is a chain

Reduced kickback bar

which has met the kickback performance

requirements of § 5.12.2.4 of

STIHL green labeled reduced kickback

bars are designed to reduce the risk of

kickback injury when used with STIHL

green labeled low kickback chains.

3. Never let the nose of the guide bar

contact any object. Do not cut limbs

with the nose of the guide bar.

Be especially careful when cutting

small, tough limbs, small size brush

and saplings which may easily catch

the chain.

ANSI B 175.1-1991 (Safety Require-

ments for Gasoline-Powered Chain-

Saws) when tested on a selected repre-

sentative sample of chainsaws below

.8 cubic inch displacement specified in

ANSI B 175.1-1991.

Warning!

When used with other, more aggressive

chains, these bars may be less effective

in reducing kickback, and may result in

higher kickback forces.

4 Don’t overreach.

5. Don’t cut above shoulder height.

6. Begin cutting and continue at full

throttle.

Warning!

There are potential powerhead and bar

combinations with which low kickback

saw chains can be used which have not

been specifically certified to comply with

the 45° computer derived kickback angle

of § 5.12 of ANSI B 175.1-1991.

7. Cut only one log at a time.

8. Use extreme caution when reentering

a previous cut.

Bow Guides

9. Do not attempt to plunge cut if you

are not experienced with these

cutting techniques.

Warning!

Some low kickback chains have not

been tested with all powerhead and bar

combinations.

Do not mount a bow guide on any

STIHL chainsaw.

10. Be alert for shifting of the log or other

forces that may cause the cut to

close and pinch the chain.

Any chainsaw equipped with a bow

guide is potentially very dangerous.

The risk of kickback is increased with a

bow guide because of the increased

kickback contact area. Low kickback

chain will not significantly reduce the risk

of kickback injury when used on a bow

guide.

Warning!

11. Maintain saw chain properly. Cut with

a correctly sharpened, properly

tensioned chain at all times.

12. Stand to the side of the cutting path

of the chainsaw.

A dull or improperly sharpened chain

may reduce or negate the effects of the

design features intended to reduce

Cutting Techniques

Felling

Felling is cutting down a tree.

Before felling a tree, consider carefully all

conditions which may affect the direction

of fall, including:

A = Pull-in:

B = Pushback:

The intended direction of the fall.

The natural lean of the tree.

Pull-in occurs when the chain on the

bottom of the bar is suddenly stopped

when it is pinched, caught or encounters

a foreign object in the wood. The reaction

of the chain pulls the saw forward and

may cause the operator to lose control.

Pushback occurs when the chain on the

top of the bar is suddenly stopped when

it is pinched, caught or encounters a

foreign object in the wood. The reaction

of the chain drives the saw straight back

toward the operator and may cause loss

of saw control. Pushback frequently

occurs when the top of the bar is used for

cutting.

Any unusually heavy limb structure.

Surrounding trees and obstacles.

The wind direction and speed.

Pull-in frequently occurs when the

bumper spike of the saw is not held

securely against the tree or limb and

when the chain is not rotating at full

speed before it contacts the wood.

To avoid pushback

Warning!

Always observe the general condition of

the tree. Inexperienced users should

never attempt to cut trees which are

decayed or rotted inside or which are

leaning or otherwise under tension.

Be alert to forces or situations that

may cause material to pinch the top

of the chain.

Warning!

Use extreme caution when cutting small

size brush and saplings which may easily

catch the chain and pull you off balance.

2. Do not cut more than one log at a time. There is an increased risk that such trees

could snap or split while being cut and

Do not twist the saw when

withdrawing the bar from a plunge

cut or underbuck cut because the

chain can pinch.

cause serious or fatal injury to the

operator or bystanders. Also look for

broken or dead branches which could

vibrate loose and fall on the operator.

When felling on a slope, the operator

should stand on the uphill side if

possible.

To avoid pull-in

Always start a cut with the chain

rotating at full speed and the bumper

spike in contact with the wood.

Pull-in may also be prevented by using

wedges to open the kerf or cut.

2 2

Felling Instructions:

When felling, maintain a distance of at

least 2 /

tree lengths from the nearest

person.

When felling in the vicinity of roads,

railways and power lines, etc., take extra

precautions. Inform the police, utility

company or railway authority before

beginning to cut.

Escape path

Buttress roots

Warning!

First clear the tree base and work area

from interfering limbs and brush and

clean its lower portion with an ax.

If the tree has large buttress roots, cut

into the largest buttress vertically first

(horizontally next) and remove the

resulting piece.

The noise of your engine may drown any

warning call.

Warning!

Then, establish two paths of escape (B)

and remove all obstacles. These paths

should be generally opposite to the plan-

ned direction of the fall of the tree (A)

and about at a 45° angle. Place all

There are a number of factors that may

affect and change the intended direction

of fall, e.g. wind, lean of tree, sloping

ground, one-sided limb structure, wood

structure, decay, snow load, etc. To re-

duce the risk of severe or fatal injury to

yourself or others, look for these condi-

tions prior to beginning the cut, and be

alert for a change in direction during fall.

tools and equipment a safe distance away

from the tree, but not on the escape paths.

Gunning sight

Conventional cut

Open-face technique

When making the felling notch, use the

gunning sight on the shroud and housing

to check the required direction of fall:

A = felling notch - determines the

direction of the fall

For a conventional cut:

For an open-face cut:

Position the saw so that the

•

gunning sight points exactly in the

direction you want the tree to fall.

Properly place felling notch

•

perpendicular to the Iine of fall,

close to the ground

perpendicular to the Iine of falI,

close to the ground

Cut down at app. 45-degree angle

Cut down at app. 50-degree angle

•

to a depth of about 1/5 to 1/4 of the

trunk diameter

to a depth of app.1/5 to 1/4 of the

trunk diameter

Make second cut horizontal

Make second cut from below at

•

Remove resulting 45-degree piece

app. 40 degree angle

•

Remove resulting 90-degree piece

Making sapwood cuts

B = Felling cut

C = Hinge

Helps control the falling tree

•

Conventional and open-face technique:

For medium sized or larger trees

Begin 1 to 2 inches higher than

Do not cut through the hinge -

•

you could lose control of the

direction of the fall

•

make cuts at both sides of the trunk,

center of felling notch

at same height as subsequent

Cut horizontalIy towards the felling

felling cut.

notch

Warning!

In order to reduce the risk of personal

injury, never stand directly behind the

tree when it is about to fall, since part of

the trunk may split and come back

towards the operator (barber-chairing),

or the tree may jump backwards off the

stump. Always keep to the side of the

falling tree. When the tree starts to fall,

withdraw the bar, shut off the engine and

walk away on the preplanned escape

path. Watch out for falling limbs.

Cut to no more than width of guide

Leave approx. /10 of diameter uncut.

bar.

This is the hinge

Do not cut through the hinge –

This is especially important in soft

wood in summer - it helps prevent

sapwood splintering when the tree

falls.

you could lose control of the

direction of the fall

Drive wedges into the felling cut where

necessary to control the fall.

Warning!

If the tip of the bar contacts a wedge,

it may cause kickback. Wedges should

be of wood or plastic – never steel,

which can damage the chain.

Felling cut for large diameter trees:

Avoid repositioning the saw more than

necessary. When repositioning for the

next cut, keep the guide bar fully engaged

in the kerf to keep the felling cut straight.

If the saw begins to pinch, insert a

wedge to open the cut. On the last cut,

do not cut the hinge.

Warning!

Be extremely careful with partially fallen

trees which are poorly supported.

When the tree hangs or for some other

reason does not fall completely, set the

saw aside and pull the tree down with a

cable winch, block and tackle or tractor.

If you try to cut it down with your saw,

you may be injured.

Warning!

Felling a tree that has a diameter greater

than the length of the guide bar requires

use of either the sectioning felling cut or

plunge-cut method. These methods are

extremely dangerous because they

involve the use of the nose of the guide

bar and can result in kickback. Only

properly trained professionals should

attempt these techniques.

Plunge-cut method

Felling cut for small diameter trees:

simple fan cut

Timber having a diameter more than

twice the length of the guide bar requires

the use of the plunge-cut method before

making the felling cut.

Sectioning method

Engage the bumper spikes of the chain-

saw directly behind the location of the

intended hinge and pivot the saw around

this point only as far as the hinge. The

bumper spike rolls against the trunk.

For the sectioning method make the first

part of the felling cut with the guide bar

fanning in toward the hinge. Then, using

the bumper spike as a pivot, reposition

the saw for the next cut.

If you are inexperienced with a chainsaw,

plunge-cutting should not be attempted.

Seek the help of a professional.

Limbing

Limbing is removing the branches from

a fallen tree.

Warning!

First, cut a large, wide felling notch.

Make a plunge cut in the center of the

notch.

There is an extreme danger of kickback

during the limbing operation. Do not

work with the nose of the bar. Be extremely

cautious and avoid contacting the log or

other limbs with the nose of the guide bar.

The plunge cut is made with the guide

bar nose. Begin the plunge cut by

applying the lower portion of the guide

bar nose to the tree at an angle. Cut until

the depth of the kerf is about the same as

the width of the guide bar. Next, align

the saw in the direction in which the

recess is to be cut.

Do not stand on a log while limbing it –

you may slip or the log may roll.

Start limbing by leaving the lower limbs to

support the log off the ground. When

underbucking freely hanging limbs,

a pinch may result or the limb may fall,

causing loss of control. If a pinch occurs,

stop the engine and remove the saw,

by lifting the limb.

Bucking

Bucking is cutting a log into sections.

With the saw at full throttle, insert the

guide bar in the trunk.

Warnings!

1. When bucking, do not stand on the

log. Make sure the log will not roll

downhill. If on a slope, stand on the

uphill side of the log.

Enlarge the plunge cut as shown in

illustration.

Warning!

Be extremely cautious when cutting

limbs or logs under tension (spring poles).

The limbs or logs could spring back

toward the operator and cause loss of

control of the saw and severe or fatal

injury to the operator.

Watch out for rolling logs.

Warning!

There is an extreme danger of kickback

at this point. Extra caution must be taken

to maintain control of the saw. To make

the felling cut, follow the sectioning

method described previously.

MAINTENANCE, REPAIR

AND STORING

Maintenance, replacement, or repair

of the emission control devices and

systems may be performed by any

nonroad engine repair establishment

or individual. However if you claim

warranty for a component which has

not been serviced or maintained pro-

perly or if nonapproved replacement

parts were used, STIHL may deny

warranty.

Never operate a chainsaw that is

damaged, improperly adjusted or not

completely or securely assembled.

Follow the maintenance and repair

instructions in the appropriate section of

your Owner’s Manual, especially those

in the chapters “Mounting the Bar and

Chain”, “Maintaining and Sharpening”

and “Chain Brake”.

Cut only one log at a time.

5. Logs under strain: Risk of pinching!

Always start relieving cut (1) at

compression side (A).

Shattered wood should be cut very

carefully. Sharp slivers of wood

may be caught and flung in the

direction of the operator of the saw.

Then make bucking cut (2) at

tension side (B).

If the saw pinches, stop the engine

and remove it from the log.

Warning!

Use only STIHL replacement parts for

maintenance and repair. Use of parts

manufactured by others may cause

serious or fatal injury.

When cutting small logs, place log

through “V” - shaped supports on

top of a sawhorse. Never permit

another person to hold the log.

Never hold the log with your leg or

foot.

6. Only properly trained professionals

should work in an area where the

logs, limbs and roots are tangled.

Working in blowdown areas is

extremely hazardous.

Warning!

Always stop the engine and ensure that

the chain is stopped before making any

adjustments, maintenance or repair work,

Drag the logs into a clear area before

cutting. Pull out exposed and cleared

logs first.

changing the saw chain or cleaning the

saw. Do not attempt any maintenance or

repair work not described in your

result. If your muffler was equipped with

a spark-arresting screen to reduce the

risk of fire (e. g. in the USA, Canada and

Australia), never operate your saw if the

screen is missing or damaged. Remem-

ber that the risk of forest fires is greater

in hot or dry weather.

For the proper and effective operation of

the chain brake the brake band and

clutch drum must be kept free of dirt,

grease and other foreign matter which

may reduce friction of the band on the

drum.

Owner’s Manual. Have such work perfor-

med at your STIHL service shop only.

Warning!

Never test the ignition system with

Keep the chain, bar and sprocket clean;

replace worn sprockets or chains.

Keep the chain sharp.

For these reasons, each STIHL chain-

saw should be returned to trained

personnel such as your STIHL servicing

dealer for periodic inspection and

servicing of the brake system according

to the following schedule:

ignition wire terminal removed from spark

plug or with unseated spark plug, since

uncontained sparking may cause a fire.

You can spot a dull chain when easy-to-

cut wood becomes hard to cut and burn

marks appear on the wood.

Warning!

To reduce the risk of fire and burn injury,

use only spark plugs authorized by

STIHL. Always press spark plug boot

snugly onto spark plug terminal of the

proper size. (Note: If terminal has

detachable SAE adapter nut, it must be

attached.) A loose connection between

spark plug terminal and ignition wire

connector in the boot may create arcing

that could ignite combustible fumes and

cause a fire. Keep spark plug clean, and

make sure ignition lead is in good

condition.

Keep the chain at proper tension. Tighten

all nuts, bolts and screws except the

carburetor adjustment screws after each

use.

Heavy usage - every three months,

Moderate usage - twice a year,

Occasional usage - annually.

The chainsaw should also be returned

immediately for maintenance whenever

the brake system cannot be thoroughly

cleaned or there is a change in its

operating characteristics.

Warning!

In order for the chain brake on your

STIHL chainsaw to properly perform its

function of reducing the risk of kickback

and other injuries, it must be properly

maintained. Like an automobile brake,

a chainsaw chain brake incurs wear

each time it is engaged.

For any maintenance please refer to the

maintenance chart and to the warranty

statement near the end of this manual.

Warning!

The amount of wear will vary depending

upon usage, conditions under which the

saw is used and other factors. Excessive

wear will reduce the effectiveness of the

chain brake and can render it inoperable.

Additionally, the daily maintenance

schedule for your chainsaw set forth in

your STIHL Owner’s Manual should be

strictly followed.

Do not operate your chainsaw if the

muffler is damaged, missing or modified.

An improperly maintained muffler will

increase the risk of fire and hearing loss.

Never touch a hot muffler or burn will

Store chainsaw in a dry place and away

from children. Before storing for longer

than a few days, always empty the fuel

tank (see chapter "Storing the Machine"

in this manual).

Mounting the Bar and Chain

Models with Front Chain Tensioner

Wear work gloves to protect hands

Fit the chain - start at the bar nose -

•

Fit the guide bar over the studs (4)

so that the chain cutting edges on

the top of the bar point toward the

bar nose.

You can run chains of different pitches

on this chainsaw - depending on the

chain sprocket (see “Specifications”)

•

disengage the chain brake:

Pull hand guard (3) toward

the front handle.

Engage the peg of the tensioner

slide in locating hole (5) - place the

chain over sprocket (6) at the

same time.

The chain pitch must match the guide

bar. In addition, the drive link gauge

must match the guide bar groove width.

Now turn tensioning screw (7)

clockwise until there is very little

chain sag on the underside of the

bar - and the drive link tangs are

located in the bar groove.

Unscrew nuts and take off cover.

•

Turn tensioning screw (1) counter-

clockwise until the tensioning nut (2)

butts against left end of housing slot.

Refit the sprocket cover - and

screw on the nuts only fingertight.

Now refer to chapter “Tensioning

the Saw Chain”.

•

017, 018

Mounting the Bar and Chain

Models with Quick Chain Tensioner

You can run chains of different pitches

on this chainsaw - depending on the

chain sprocket (see “Specifications”)

Remove the tensioning gear (4)

Position the tensioning gear (6)

against the guide bar (7).

•

and turn it over.

Take out the screw (5).

Fit and tighten down the screw (8).

The chain pitch must match the guide

bar. In addition, the drive link gauge

must match the guide bar groove width.

Pull out the hinged handle (1) of the

•

wingnut so that it snaps into posi-

tion.

Turn the wingnut (2) counterclock-

•

wise until it hangs loose in the chain

sprocket cover (3).

Remove the sprocket cover.

•

017, 018

Wear work gloves to protect hands.

Fit the chain - start at the bar nose -

pay attention to position of tensio-

ning gear and the cutting edges.

Disengage the chain brake:

Pull hand guard (10) toward the

front handle.

Make sure the drive link tangs

•

engage the bar groove (see arrow)

and then rotate tensioning gear

counterclockwise up to the stop.

•

Turn the guide bar so that the

tensioning gear is facing you.

Turn tensioning gear (9) clockwise

•

up to the stop.

Fit the chain over the

sprocket (11) and slip the guide bar

over the stud (12) - the head of the

rear collar stud must locate in the

slot.

017, 018

Tensioning the Saw Chain

Models with Front Chain Tensioner

Models with Quick Chain Tensioner

Retensioning during cutting work:

Turn off the engine

•

Slacken the nuts.

•

Hold the bar nose up -

•

use screwdriver to turn the

tensioning screw (1) clockwise

until chain fits snugly against

the underside of the bar.

Place sprocket cover in position -

engage guide lugs in recesses in

engine housing and check that the

teeth of the adjusting wheel and

tensioning gear mesh.

Tighten down the nuts firmly.

Retensioning during cutting work:

•

A new chain has to be retensioned

more often than one that has been in

use for some time -

Turn off the engine

•

Pull out the handle of the wingnut

•

Slacken off the wingnut.

Check chain tension frequently -

see section “During Operation”.

Turn adjusting wheel (1) clockwise

•

If necessary, turn the adjusting

wheel (13) slightly until the sprocket

cover can be pushed flush against

the engine housing.

up to the stop.

Tighten firmly down the wingnut (2)

Now refer to chapter

by hand.

•

“Checking Chain Tension”

Fold down the handle of the

Pull out the hinged handle (14) of

the wingnut so that it snaps into

position.

wingnut.

Check chain tension.

A new chain has to be retensioned

more often than one that has been in

use for some time -

Engage wingnut and tighten it down

moderately.

•

Now refer to chapter

Check chain tension frequently -

see section “During Operation”.

“

Tensioning the Saw Chain”

Now refer to chapter

•

“Checking Chain Tension”

017, 018

Checking Chain Tension

Fuel Mix

All Versions

This engine is certified to operate on

unleaded gasoline and oil with the

mix ratio 50:1.

We recommend STIHL 50:1 two-stroke

engine oil since it is specially formulated

for use in STIHL engines.

Do not use BIA or TCW (two-stroke

water cooled) mix oils!

Your two-stroke engine requires a

mixture of brand-name gasoline and

quality two-stroke engine oil with the

classification TC.

Take care when handling gasoline.

Avoid direct contact with the skin and

avoid inhaling fuel vapour

Use regular branded unleaded gasoline

with a minimum octane rating of

(see “Safety Precautions”).

Turn off the engine.

•

Wear work gloves.

90 ROZ (U.S.A./Canada: pump octane

min. 89!). If the octane number of the

regular grade gasoline in your area is

lower, use premium unleaded fuel.

Fuel with a lower octane rating may

result in preignition (causing “pinging”)

which is accompanied by an increase in

engine temperature. This, in turn,

increases the risk of piston seizure

and damage to the engine.

The canister should be kept tightly

closed in order to avoid any moisture

getting into the mixture.

•

Chain must fit snugly against the

underside of the bar - and, with the

chain brake disengaged, it must still be

possible to pull the chain along the bar

by hand.

The fuel tank and the canister in which

fuel mix is stored should be cleaned

from time to time.

If necessary, retension the chain.

Fuel mix ages:

•

A new chain has to be retensioned

more often than one that has been in

use for some time -

Only mix sufficient fuel for a few days

work, not to exceed 3 months of storage.

Store in approved safety fuel-canisters

only. When mixing, pour oil into the

canister first, and then add gasoline.

The chemical composition of the fuel is

also important. Some fuel additives not

only detrimentally affect elastomers

(carburetor diaphragms, oil seals, fuel

lines etc.), but magnesium castings as

well. This could cause running problems

or even damage the engine. For this

reason it is essential that you use only

branded fuels!

Check chain tension frequently -

see section “During Operation”.

Gaso-

line

Oil (STIHL 50:1 or

equivalent branded TC oils)

US gal.

US fl.oz

Use only STIHL two-stroke engine oil or

equivalent branded two-stroke air-

cooled engine oils with the classification

TC for mixing.

2.6

6.4

1/2

12.8

Dispose empty mixing-oil canisters only

at authorized disposal locations.

017, 018

Fueling

Before fueling, clean the fuel filler cap

and the area around it to ensure that no

dirt falls into the tank.

Change the fuel pick up body every year.

Before storing your machine for a long

period, drain and clean the fuel tank and

run engine until carburetor is dry.

Always thoroughly shake the mixture in

the canister before fueling your machine.

Warning!

In order to reduce the risk of burns or

other personal injury from escaping gas

vapor and fumes, remove the fuel filler

cap carefully so as to allow any pressure

build-up in the tank to release slowly.

Warning!

After fueling, tighten fuel cap as

securely as possible by hand.

Use a suitable tool (e.g. screwdriver end

of combination wrench) to tighten

slotted fuel caps.

017, 018

Chain Lubricant

Filling Chain Oil

Tank

Checking Chain Lubrication

For automatic and reliable lubrication of

the chain and guide bar:

Use only a quality, environmentally

compatible chain and bar lubricant.

STIHL chain lubricant with non-fling

additive or the rapidly biodegradable

STIHL Bioplus is recommended.

Important: Biological chain oil must be

resistant to aging (e.g. STIHL Bioplus)

since it will otherwise quickly turn to

resin. This results in hard deposits that

are difficult to remove, especially in the

area of the chain drive, clutch and chain.

It may even cause the oil pump to seize.

The service life of the chain and guide

bar depends on the quality of the

lubricant. It is therefore essential to use

only a specially formulated chain

lubricant.

Thoroughly clean the oil filler cap

The saw chain must always throw off

a small amount of oil.

•

and the area around it to ensure

that no dirt falls into the tank.

If special chain lubricant is not available,

you may - in an emergency - use an HD

single grade or multigrade engine oil

with a viscosity that suits the prevailing

outside temperature.

Never operate your saw without

•

Refill the chain oil tank every time

chain lubrication. If the chain is run

dry, the whole cutting attachment

will be irretrievably damaged within

a very short time.

•

you refuel.

There must still be a small amount of oil

in the oil tank when the fuel tank is

empty.

Always check chain lubrication and

oil level in tank before starting work.

Warning!

Medical studies have shown that

renewed contact with waste oil can

cause skin cancer. Avoid direct contact

with waste oil. If waste oil does get on

your skin, wash with soap and water.

Do not use waste oil for any purpose,

and dispose of it only at authorized

disposal locations.

If the oil tank is still partly full, the reason

may be a problem in the oil supply

system:

Every new chain has to be broken

•

in for about 2 to 3 minutes.

Check chain lubrication, clean the

oil passages, contact your STIHL dealer

for assistance if necessary.

After breaking in chain, check chain

•

tension and adjust if necessary -

see section “Checking Chain

Tension”.

017, 018

Chain Brake

The chain brake is also activated by

the inertia of the front hand guard

if the kickback force of the saw is high

enough:

The hand guard is accelerated toward

the bar nose - even if your left hand is

not behind the hand guard, e.g. during

felling cut.

The chain brake will operate only if the

hand guard has not been modified in

any way.

Check operation of chain brake

Before starting work: Run engine at

idle speed, engage the chain brake

(

push hand guard toward bar nose).

Accelerate up to full throttle for no more

than 3 seconds - the chain must not

rotate. The hand guard must be free of

dirt and move freely.

Locking chain with chain brake

Releasing the chain brake

in an emergency

when starting

Pull the hand guard back toward

•

the front handle.

at idling speed.

Chain brake maintenance

Note: Always disengage chain brake

before accelerating engine and before

starting cutting work. The only exception

to this rule is when you check operation

of the chain brake. High revs with the

chain brake engaged (chain locked) will

quickly damage the powerhead and

chain drive (clutch, chain brake).

The chain is stopped and locked

when the hand guard is pushed

toward the bar nose by the left hand -

or when brake is activated by inertia

in certain kickback situations.

The chain brake is subject to normal

wear and tear. It must therefore be

checked and serviced regularly by

trained personnel (e.g. STIHL dealer) at

the following intervals:

•

Full-time professional

users:

every 3 months

every 6 months

every 12 months

Semi-professional

users:

Occasional

users:

017, 018

Information Before You Start

don’t start yet -

Starting

As soon as engine begins to fire,

move the Master Control lever to

“

Warm Start” position n (2):

Choke shutter is open -

STOP

throttle trigger is in starting-throttle

position.

If you leave the Master Control lever

in the “cold start” position,

the combustion chamber will flood

and stall the engine.

The Master Control lever must be in

“warm start” position to start a

warm engine. Also select this

position if the engine has been

running but is still cold.

The Master Control lever is locked

and can only be moved to the “run”

position (3) after squeezing the

throttle trigger.

do not use force -

The four positions of the

Master Control lever

Only machines with easy start

system:

In the “warm start” position,

continue cranking after engine

begins to fire.

To start the engine, move the lever to

Press in the button to open the

•

the “cold start” position l (1) -

As soon as the engine runs,

immediately blip the throttle trigger

so that the Master Control lever

moves to the “run” position (3).

decompression valve.

do not use force.

The valve closes automatically as

soon as the engine begins to fire.

If the Master Control lever is

in the “run” position # (3):

Press down the throttle

To shut down the engine:

Move the Master Control lever

upward to “STOP” position

$ b (4):

For this reason the button should

•

trigger interlock and move

the Master Control downward.

be pressed in before each starting

attempt.

“

Cold Start” position:

Choke shutter is closed -

throttle trigger is in starting-throttle

position.

The stop contact should engage

the contact spring -

this cuts off the ignition system.

This position is used to start a cold

engine.

017, 018

STOP

All versions

Place your saw on the ground -

make sure you have a firm footing -

check that chain is not touching any

object or the ground -

Alternative method of starting:

Hold the rear handle tightly

between your legs, just above the

knees.

•

Observe safety precautions -

•

see section “Safety Precautions”.

Push hand guard forward (1):

The chain is now locked.

bystanders must be well clear of

general work area of the saw -

Grip the front handle firmly with

your left hand -

Press down the interlock lever (2)

and squeeze the throttle trigger at

the same time and set the Master

Control lever to:

•

your thumb should be under the

handle.

Hold the saw firmly on the ground

with your left hand on the

front handle -

•

For cold start l

For warm start n

your thumb should be under

the handle.

Put your right foot into the rear

handle and press down.

(

even if engine has been running

but is still cold)

017, 018

STOP

Pull the starter grip slowly with your

right hand until you feel it engage -

then give the grip a brisk strong pull

and push down the front handle

at the same time.

When engine begins to fire:

Move Master Control lever (3)

to n

Pull the hand guard back toward

•

the front handle: =

The chain brake is now

disengaged -

•

and continue cranking -

as soon as engine runs,

immediately blip the throttle trigger

(4) -

your saw is ready for operation.

Do not pull out starter rope more

than 70 cm (about 28 in) -

•

Always disengage chain brake before

accelerating engine and before starting

cutting work. High revs with the chain

brake engaged (chain locked) will

quickly damage the powerhead and

chain drive (clutch, chain brake).

it might otherwise break.

the Master Control lever (3) will

move to the “run” position (5) #

and the engine settles down to

idling speed.

Do not let the starter grip snap back

guide it slowly into the housing

so that the starter rope can

rewind properly.

If engine is new, pull starter grip

several times to prime the fuel line.

As the chain brake is still engaged, the

engine must be returned to idling speed

immediately to avoid damage to the

engine and chain drive (clutch).

•

Observe safety precautions

•

Always check operation of chain

•

lubrication before starting work.

Shut down engine:

Move Master Control lever to b

•

017, 018

At very low outside temperatures:

Allow engine to warm up

As soon as the engine runs:

Blip the throttle trigger

•

to disengage it from starting throttle

position -

Master Control lever will move

to normal operating position -

engine settles down to idling speed.

Disengage chain brake: Pull hand

Pull off the spark plug boot.

•

guard toward front handle -

as shown in illustration -

Unscrew and dry off the spark plug.

Set the Master Control lever to b

Open throttle slightly -

•

warm up engine for short period.

Crank the engine several times with

the starter to clear the combustion

chamber.

•

Refit the spark plug and connect

the spark plug boot -

•

reassemble all other parts

Set Master Control lever to

If engine doesn’t start:

•

“warm start” even if engine is cold.

Now start the engine.

If you did not move the Master Control

lever to the “warm start” position n

quickly enough after the engine began to

fire,

Fuel tank run until dry and then refueled

the combustion chamber is flooded.

Pull starter rope several times

•

until fuel line is primed.

Press down the interlock lever and

•

set the Master Control lever to

“cold start”

Turn the twist lock above the rear

handle 90° counterclockwise and lift

off the shroud vertically.

•

017, 018

During Break-in Period

During Operation

After Finishing Work

A factory new machine should not be

run at high revs (full throttle off load) for

the first three tank fillings. This avoids

unnecessary high loads during the

break-in period.

Check chain tension frequently.

A new chain has to be retensioned more

often than one that has been in use for

some time.

Slacken off the chain

if you have retensioned it at operating

temperature during cutting work. The

chain contracts as it cools down. If it is

not slackened off, it could damage the

crankshaft and bearings.

Cold chain:

As all moving parts have to bed in during

the break-in period, the frictional

resistances in the engine are greater

during this period. The engine develops

its maximum power after about 5 to 15

tank fillings.

Tension is correct when chain fits snugly

against the underside of the bar and can

still be pulled along the bar by hand.

Retension if necessary -

Before storing your saw

for a long period -

see chapter “Tensioning the Saw Chain”.

Drain and clean the fuel tank.

•

Run engine until carburetor is dry.

•

Chain at operating temperature:

The chain stretches and begins to sag.

The drive links on the underside of the

bar must not come out of the bar groove

- the chain may otherwise jump off the

bar.

Important:

Always disengage the chain brake

before opening the throttle. Running the

engine at higher revs with the chain

brake engaged (saw chain at a standstill)

will quickly damage the engine and chain

drive (clutch, chain brake).

Retension the chain -

see chapter “Tensioning the Saw Chain”.

Always slacken off the chain again after

finishing work.

The chain contracts as it cools down.

If it is not slackened off, it may damage

the crankshaft and bearings.

After a long period of full-throttle

operation

Allow engine to run for a short while at

idling speed so that engine heat can be

dissipated by the flow of cooling air.

This helps protect engine-mounted

components (ignition, carburetor) from

thermal overload.

017, 018

Cleaning Air Filter

Taking Care of Guide Bar

Lift filter off vertically.

Turn the bar over -

•

Wash filter element in a clean,

non-flammable cleaning solution

every time you sharpen the chain -

and every time you replace

the chain - this avoids one-sided

wear, especiallly at nose and under-

side of the bar.

(

e.g. warm soapy water) and then

dry.

Always replace a damaged filter

element.

Regulary clean

1 = oil inlet hole

2 = oilway

3 = bar groove.

Measure groove depth -

•

Reinstall the filter.

•

Dirty air filters reduce engine power,

increase fuel consumption and make

starting more difficult.

with scale on filing gauge*-

or in area used most for cutting on

Rollomatic bars -

Clean the air filter when there is a

noticeable loss of engine power.

Chain

type

Chain

pitch

Minimum

groove depth

Press down the interlock lever and

•

set Master Control lever to

Picco-Mini

3/8"

5.0 mm (0.20")

“Cold Start” l

Turn the twist lock above the rear

handle 90° counterclockwise

Lift off the shroud vertically.

•

If groove depth is less than specified:

Replace the guide bar.

•

The drive link tangs will otherwise scrape

along the bottom of the groove - the

cutters and tie straps will not ride on the

rails.

Special accessory

017, 018

Adjusting Carburetor

L LA

with two adjusting screws

Motor Management

Engine stops while idling:

L’ screw must be one turn open.

’

Exhaust emissions are controlled by the

design of the fundamental engine

parameters and components

Turn the idle speed screw (LA) clockwise

until chain begins to run -

(

e.g. carburetion, ignition, timing and

then back off the screw one quarter

of a turn.

valve or port timing) without the addition

of any major hardware.

The carburetor does not have a high

speed adjusting screw (H screw) but is

designed to provide an optimum fuel-air

mixture under all operating conditions.

Chain runs when engine is idling

’

L’ screw must be one turn open.

Turn the idle speed screw (LA)

counterclockwise until chain

stops running -

The maximum engine speed specified

for machines with a conventional

then turn screw another quarter turn in

the same direction.

carburetor does not apply to this version.

No provision is made for adjustment of

maximum engine speed. On these

machines it is only possible to correct

the idling speed within narrow limits.

Erratic idling behaviour,

poor acceleration

Check the air filter and clean it if

necessary.

•

(even though ’L’ screw in one turn

open)

Carefully screw the low speed screw (L)

down onto its seat.

Idle setting is too lean.

Now open it one turn counterclockwise

Turn the low speed screw (L) counter-

clockwise until engine runs and

accelerates smoothly.

(

standard setting, L = 1)

Warm up the engine.

•

It is usually necessary to change the

setting of the idle speed screw (LA) after

every correction to the low speed screw

(L).

Turn screws only very slightly and

carefully - even minor changes have a

noticeable effect on the engine’s running

behavior.

017, 018

Adjusting Carburetor

Spark Arresting Screen in

Muffler

with one adjusting screw

Carefully screw down the idle speed

screw (LD) counterclockwise (left-hand

thread) until it is firmly seated.

Then back off the screw two full turns

clockwise (standard setting LD = 2)

Start and warm up the engine.

•

Use idle speed screw (LD) to adjust

idle speed correctly:

chain must not rotate

Engine idle speed is too low:

Turn the idle speed screw (LD)

•

clockwise until chain begins to run -

then back off the screw half a turn.

The carburetor is set at the factory to

provide an optimum fuel-air mixture

under all operating conditions.

Chain runs when engine is idling:

If the engine is low on power, check the

spark arresting screen inside the muffler.

Turn the idle speed screw (LD)

•

counterclockwise until chain stops

running - then turn the screw about

another half turn in the same

direction.

Take out the screws (1) and remove the

shroud (2).

Adjusting idle speed

Remove the spark arresting screen (3)

from the muffler (4).

Check air filter and fit a new one if

•

necessary.

Check spark arresting screen and

Clean spark arresting screen if

•

clean or replace as necessary.

necessary.

If screen is damaged or coked up,

fit a new one.

Refit the spark arresting screen,

place the shroud in position and

secure with the screws.

017, 018

Checking Spark Plug

Starter Rope

The starter rope is subject to normal

wear and tear. To prolong its service

life, please observe the following

points:

Do not pull out the rope more than

•

0 cm (about 28 in) -

it might otherwise break.

Do not let the starter grip snap back

•

guide it slowly and vertically into

Wrong fuel mix (too much engine oil in

the gasoline), a dirty air filter and

the housing so that the starter rope

can rewind properly.

unfavorable running conditions (mostly

at part throttle etc.) affect the condition of

the spark plug. These factors cause

deposits to form on the insulator nose

which may result in trouble in operation.

Do not hold it sideways so that it

rubs against the guide bush.

Always replace a damaged starter

rope in good time or have it replaced

by your STIHL dealer.

If engine is down on power, difficult to

start or runs poorly at idling speed,

first check the spark plug.

Fit a new spark plug after

Replacing Starter Rope/Rewind

Spring

•

approx. 100 operating hours -

or earlier if the electrodes are

badly eroded.

Remove spark plug -

•

see chapter “Starting”:

•

Remove the shroud.

Clean dirty spark plug.

•

Unscrew the oil tank filler cap and

•

Check electrode gap -

drain the tank.

•

!Warning!

it should be 0.5mm/0.02" (A) -

•

Unscrew the fuel tank filler cap and

To reduce the risk of fire and burn injury,

use only spark plugs authorized by

STIHL (see “Specifications”). Always

press spark plug boot (2) snugly onto

spark plug terminal (1) of the proper

size. (Note: If terminal has detachable

SAE adapter nut, it must be attached.)

A loose connection between spark plug

terminal and ignition wire connector in

the boot may create arcing that could

ignite combustible fumes and cause a

fire.

readjust if necessary.

drain the tank.

Use only resistor type spark plugs

Always keep chain oil and fuel mix

•

of the approved range.

in approved safety-type canisters.

Remove the screws from the fan

Rectify problems which have caused

fouling of spark plug:

housing and hand guard.

Lift away the fan housing.

•

Incorrect carburetor setting, too much oil

in fuel mix, dirty air filter,

•

Tension the starter rope or rewind

spring or replace as necessary.

unfavorable running conditions, e.g.

operating at part load.

017, 018

Checking and Replacing

Chain Sprocket

Storing the Machine

For periods of about 3 months or longer:

Drain and clean the fuel tank in a

•

well ventilated area.

Run engine until carburetor is dry -

this helps prevent the carburetor

diaphragms sticking together.

Remove the saw chain and guide

•

bar, clean them and protect

with corrosion inhibiting oil.

Replace the chain sprocket

Before removing chain sprocket

Thoroughly clean the machine -

•

after using two Oilomatic chains

pay special attention to the

cylinder fins and air filter.

Remove chain sprocket cover,

chain and guide bar.

or even sooner if the wear marks

If you use a biological chain and

•

on the sprocket are deeper than approx.

Disengage the chain brake:

Pull hand guard toward front handle.

bar lubricant, e.g. STIHL Bioplus,

completely fill the chain oil tank.

.5 mm ( /64") since this would reduce

the life of the chain.

Store the machine in a dry and high

•

Use a screwdriver to remove the

or locked location - out of the

reach of children and other

unauthorized persons.

•

Check wear marks:

E-clip.

on teeth of spur sprockets.

Pull washer, spur sprocket and

needle cage off the crankshaft.

Clean the crankshaft stub and

needle cage, and lubricate with

STIHL grease (tube 0781 120

You can use gauge * 0000 893 4101

to check the depth of the wear marks

on spur and rim sprockets.

1111).

It is best to use two chains in rotation

with one sprocket.

Reassemble with new spur

sprocket -

•

After fitting the clutch drum, rotate it

about one half turn to engage oil

pump drive.

Refit washer and E-clip on the

crankshaft.

Use only original STIHL chain

sprockets to ensure correct

operation of the chain brake.

Special accessory

017, 018

Maintaining and

Sharpening Saw Chain

Correctly sharpened chain

A properly sharpened chain slices

through wood effortlessly and requires

very little feed pressure.

Do not work with a dull or damaged

chain as it will increase the physical

effort required, produce unsatisfactory

results and a higher rate of wear.

The chain pitch (e.g. 3/8) is marked on

the depth gauge side of each cutter.

A = Filing angle

Clean and check your chain

for cracks in the links and damaged

rivets -

B = Side plate angle

Use only special saw chain files

Chain type

Angle (°)

replace any damaged or worn parts of

the chain and match the new parts to the

shape and size of the original parts.

Other files have the wrong shape and

cut.

Rapid-Micro (RM)

Rapid-Super (RS)

Picco-Micro (PM/PMN)

Important: It is absolutely imperative to

comply with the angles and dimensions

specified below. If the saw chain is

incorrectly sharpened - and in

particular if the depth gauge is set too

low - there is a risk of increased

kickback of the chainsaw, with resulting

danger of injury.

Select file diameter according to chain

pitch - see table at the end of this

chapter.

Cutter shapes:

Micro = Semi-chisel

Super = Full chisel

You must observe certain angles when

resharpening the chain cutters

Specified angles A and B are

obtained automatically if recommen-

ded files or sharpening tools and

correct settings are used.

Select the appropriate sharpening

tools for the chain pitch.

See “Technical Data” for the permitted

chain pitches.

Furthermore, the angles must be the

same on all cutters.

If angles are uneven:

Chain will run roughly, not in a straight

line, wear quickly and finally break.

Avoid touching the tie straps and

drive links with the file.

•

Rotate the file at regular intervals

while filing -

this avoids one-sided wear.

Use a piece of hardwood to remove

burrs from cutting edge.

90°

•

Check angles with the filing gauge.

As these requirements can be met only

after sufficient and constant practice:

File correctly

All cutters must be the same length

If you use a file holder or the FG 1:

Leave the chain on the bar.

Clamp the bar in a vise if necessary.

Lock the chain - push hand guard

forward

If the cutters are not the same length,

they will have different heights. This

makes the chain run roughly and can

cause it to break.

•

Use a file holder.*

•

A file holder must be used for manual

resharpening of Super chain. The correct

filing angle is marked on the file holder.

•

To rotate the chain - pull hand

guard against front handle

Sharpen chain frequently, take

away as little metal as possible -

two or three strokes of the file are

usually enough

Find the shortest cutter and then file all

other cutters back to the same length.

This can be very time consuming - it is

best to have it done in the workshop on

an electric grinder.

•

90°

5° 70° 60°

80°

Always file from the inside to the

outside of the cutter.

•

30°

35°

10°

0°

The file only sharpens on the

forward stroke -

lift the file off the cutter on the back-

stroke.

For checking angles

Hold the file horizontally for all

chain types (at right angle to side of

guide bar) and file according to the

angles marked on the filing tool.

•

STlHL filing gauge* (see table)

A universal tool for checking the filing

and side plate angles, depth gauge

setting and cutter length. Also cleans the

guide bar groove and oil inlet hole.

Special accessory

Chain

pitch

Depth gauge

distance “a”

Inch

(mm)

(Inch)

(6.35)

(9.32)

0.65

0.45

0.65

0.80

(0.026)

(0.018)

(0.026)

(0.031)

/8-PM

/8-PMN (9.32)

.325

(8.25)

(9.32)

(10.26)

.404

Depth gauge setting

Round off depth gauges parallel to the

stamped marking.

This setting may be increased by 0.2 mm

The depth gauge determines the height

at which the cutter enters the wood and

thus the thickness of the chip removed.

(

0.008") for cutting softwood in mild

weather season - no frost.

After sharpening

Clean the chain thoroughly, remove

filings or grinding dust - lubricate the

chain by immersing it in an oil bath.

Lowering depth gauges

Distance between depth gauge and

cutting edge = a:

The depth gauge setting is reduced

when the chain is sharpened. Use filing

gauge to check the setting every time

you sharpen the chain and, if necessary,

lower the depth gauge with a flat or

triangular file so that it is level with the

filing gauge.

Before long out-of-service period

Clean the chain with a brush and

immerse it in an oil bath.

Sharpening tools

Chain pitch

Inch (mm)

Round file Ø Round file

mm (Inch) Part No.

File holder

Part No.

Filing gauge

Part No.

Flat file

Sharpening kit*

Part No.

(6.35)

4.0 (5/32) 5605 772 4006

4.8 (3/16) 5605 772 4806

5.2 (13/64) 5605 772 5206

5605 750 4327

5605 750 4328

5605 750 4329

5605 750 4330

1110 893 4000

0000 893 4000

1110 893 4000

1106 893 4000

0814 353 3356

5605 007 1027

5605 007 1026

5605 007 1027

5605 007 1028

5605 007 1029

5605 007 1030

/8 PMN (9.32)

/8 P

.325

(9.32)

(8.25)

(9.32)

.404

(10.26) 5.5 (7/32) 5605 772 5506

consisting of file holder with round file, flat file and filing gauge.

Maintenance Chart

Please note that the following maintenance intervals apply for normal operating

conditions only. If your daily working time is longer than normal or cutting conditions are difficult

(very dusty work area, tropical wood, etc.) shorten the specified intervals accordingly.

Visual inspection (condition, leaks)

Clean

Check operation

Complete machine

Throttle trigger, interlock lever,

Master Control, depending on model

Check operation

Chain brake

Have cleaned by STIHL dealer

Check

Filter in fuel tank

Clean, replace filter element

Fuel tank

Clean

Chain oil tank

Chain lubrication

Clean

Check

Inspect, also check sharpness

Saw chain

Check chain tension

Sharpen

Check (wear, damage)

Clean and turn over

Guide bar

Deburr

Replace

Chain sprocket

Air filter

Check

Clean

Replace

Cooling inlets

Cylinder fins

Clean

Check idle adjustment – chain must not turn

Readjust idle

39/40

Carburetor

Spark plug

Readjust electrode gap

All accessible screws and nuts

Retighten

(

not adjusting screws)

Rubber vibration buffers

Have replaced by STIHL dealer

Inspect

Spark arresting screen in muffler

Clean or replace

Check

Chain catcher

Replace

017, 018

Specifications

Engine

Fuel/Oil System

Cutting Attachment

Recommended cutting attachments

for compliance with § 5.12 of ANSI

Standard B 175.1-1991

STIHL single cylinder two-stroke engine

Carburetor:

All position diaphragm carburetor

with integral fuel pump

Air filter:

017

(see page 12 of this Manual):

Displacement:

Bore:

30.1 cm (1.89 cu. in)

STIHL reduced kickback bar

37 mm (1.46 in)

28 mm (1.10 in)

Felt mat

(

with green label)

Stroke:

Fuel tank capacity:

for 3/8" Picco pitch:

.25 l (0.53 US pt)

Picco Micro Mini gauge (1.1 mm)

Picco Micro gauge (1.3 mm)

Fuel mix:

018

See chapter “Fuel Mix”

Chain lubrication:

Rollomatic with sprocket nose

Displacement:

Bore:

31.8 cm (1.91 cu. in)

0 or 35 cm (12 or 14 in)

38 mm (1.50 in)

28 mm (1.10 in)

Fully automatic speed-controlled

rotary piston oil pump.

Oil tank capacity:

STIHL low kickback chain*

Stroke:

(

with green label) for 3/8" Picco pitch:

.32 mm (3/8") Picco Micro Mini (61PMN)

.32 mm (3/8") Picco-Micro1 (63 PM1)

0.15 l (0.32 US pt)

Ignition System

Chain sprocket:

- tooth for 3/8" Picco pitch

Electronic magneto ignition

Spark plug (suppressed):

BOSCH WSR 6 F

Weight

Since new bar/chain combinations may be

developed after publication of this Manual,

ask your STIHL dealer for the latest STIHL

recommendations.

NGK BPMR 7 A or

without bar and chain

Champion RCJ 6 Y

17:

3.9 kg (8.60 lbs)

Heat range 200

018:

In order to comply with the kickback

performance requirements of § 5.12

of ANSI Standard B 175.1-1991,

Electrode gap 0.5 mm (0.02 in)

Spark plug thread M 14x1.25,

9.5 mm (0.37 in) long

do not use replacement saw chain

unless it has been designated as

meeting the ANSI § 5.12 requirements

on this specific powerhead, or has been

designated as “low kickback” saw chain*

in accordance with the ANSI B 175.1-

991 standard.

See definition of “low kickback chain”

on page 12 of this Manual.

017, 018

Ordering Spare Parts

Please enter your saw model, machine

number as well as the part numbers of

the guide bar, saw chain and chain

sprocket in the spaces provided.

Warranty claims following repairs

can be accepted only if the repair

has been performed by an authorized

STIHL servicing dealer using original

STlHL spare parts.

This will make re-ordering simpler.

The guide bar, saw chain and chain

sprocket are subject to normal wear

and tear.

Original STIHL parts can be identified by

the STlHL part number,

the logo STIHL

and the STIHL parts symbol (

When purchasing these parts, always

quote the saw model, the part numbers

and names of the parts.

The symbol may appear alone on small

parts.

Model

Machine number

Guide bar part number

Chain part number

Sprocket part number

For recommended STIHL reduced

kickback cutting attachments

see section “Specifications”

of this Owner’s Manual.

017, 018

STIHL Incorporated Limited Warranty Federal and

California Emission Control Systems Utility Engines

Your Warranty Rights

and Obligations

Owner’s Warranty Responsibilities:

A. Warranty Commencement Date

The warranty period begins on the date

the engine or equipment is delivered to

you and you have signed and sent back

the warranty card to Stihl.

As the utility equipment engine owner,

you are responsible for the performance

of the required maintenance listed in

your owner’s manual. Andreas Stihl

recommends that you retain all receipts

covering maintenance on your utility

equipment engine, but Andreas Stihl

cannot deny warranty solely for the lack

of receipts or for your failure to ensure

the performance of all scheduled

maintenance.

The California Air Resources Board and

Andreas Stihl are pleased to explain the

emission control system warranty on

your 1995 and later utility equipment

engine. In California, new utility and lawn

and garden equipment engines must be

designed, built and equipped to meet the

State’s stringent anti-smog standards.

Andreas Stihl must warrant the emission

control system on your utility equipment

engine for the periods of time listed

below provided there has been no

abuse, neglect or improper maintenance

of your lawn and garden equipment

engine.

B. Length of Coverage

The engine manufacturer warrants to

the initial owner and each subsequent

purchaser that the engine is free from

defects in materials and workmanship

which cause the failure of a warranted

part for a period of two years.

As the utility equipment engine owner,

you should be aware, however, that

Andreas Stihl may deny you warranty

coverage if your utility equipment engine

or a part has failed due to abuse, ne-

glect, improper maintenance or

C. What is Covered:

1. Repair or Replacement of Parts

Repair or replacement of any warranted

part will be performed at no charge to

the owner at an authorized Stihl

servicing dealer. To obtain information

about the authorized servicing dealer

nearest you, call 1-800-467-8445 or you

can write to

Your emission control system includes

parts such as the carburetor and the

ignition system.

unapproved modifications.

You are responsible for presenting your

utility equipment engine to a Stihl

service centre as soon as a problem

exists. The warranty repairs will be

completed in a reasonable amount of

time, not to exceed 30 days.

Where a warrantable condition exists,

Andreas Stihl will repair your lawn and

garden equipment engine at no cost to

you including diagnosis, parts and labor.

Stihl Inc.,

536 Viking Drive, P.O. Box 2015,

Virginia Beach, VA 23450-2015.

Manufacturer’s Warranty Coverage:

If you have any questions regarding

your warranty rights and responsibilities,

please contact a Stihl customer service

representative at 1-800-467-8445 or you

can write to

The 1995 and later utility equipment

engines are warranted for two years.

If any emission-related part on your

engine is defective, the part will be

repaired or replaced by Andreas Stihl.

Stihl Inc.,

36 Viking Drive, P.O. Box 2015,

Virginia Beach, VA 23450-2015.

017, 018

Warranty Period

The use of add-on or modified parts can

be grounds for disallowing a warranty

claim. The engine manufacturer is not

liable to cover failures of warranted parts

caused by the use of add-on or modified

parts.

Carburetor

Any warranted part which is not

Ignition system (ignition module)

scheduled for replacement as required

maintenance, or which is scheduled only

for regular inspection to the effect of

Spark plug

Airfilter

Manifold

Fasteners

"repair or replace as necessary" will be

warranted for the warranty period. Any

warranted part which is scheduled for

replacement as required maintenance

will be warranted for the period of time

up to the first scheduled replacement

point for that part.

E. How to File a Claim

This warranty gives you specific legal

rights, and you may have other rights

which vary from state to state.

Bring the product to any authorized Stihl

servicing dealer and present the signed

warranty card.

I. Maintenance Statements

You, as the owner, are responsible for

the performance of the required

maintenance especially of those parts

listed above, as defined in the relevant

instructions of this manual.

Diagnosis

F. Where to get Warranty Service

Warranty services or repairs will be

provided at all authorized Stihl servicing

dealers.

You, as the owner, shall not be charged

for diagnostic labor which leads to the

determination that a warranted part is

defective. However, if you claim warranty

for a component and the machine is

tested as non-defective, Stihl will charge

you for the cost of the emission test.

Mechanical diagnostic work is performed

at an authorized Stihl servicing dealer.

Emission test may be performed either

at Stihl or at any independent test

laboratory.

G. Maintenance;

Replacement and Repair

These instructions are based on the

application of the recommended

of Emission-related Parts

Any Stihl-approved replacement part

may be used in the performance of any

warranty maintenance or repairs on

emission-related parts, and will be

provided without charge to the owner if

the part is still under warranty.

2-stroke mixture (see also instruction

"Fuel"). Discrepancies regarding quality

and mixing ratio of fuel and oil may

require shorter maintenance intervals.

Consequential Damages

Stihl is liable for damages to other

engine components caused by the

failure of a warranted part still under

warranty.

H. Emission Control Warranty

Parts List

The following parts are covered by this

warranty if the maintenance procedures

according to the instructions in this

owners manual are carried out:

D. What is not Covered

Failures caused by abuse,

neglect, or improper maintenance.

Add-on or modified parts

(non-genuine parts).

017, 018

Continuation of Important Safety Precautions

. Use caution when handling fuel.

Move the chainsaw at least

10. Do not operate a chainsaw that

is damaged, improperly

Manual maintenance instruc-

tions, should be performed by

competent chainsaw service

personnel.

0 feet (3 m) from the fueling

adjusted, or not completely and

securely assembled. Be sure

that the saw chain stops

point before starting the engine.

(For example, if improper tools

are used to remove the

. Do not allow other persons to

be near the chainsaw when

starting or cutting with the

chainsaw. Keep bystanders

and animals out of the work

area.

moving when the throttle trigger

is released.

flywheel or if an improper tool

is used to hold the flywheel in

order to remove the clutch,

structural damage to the

flywheel could occur and could

be subsequently cause the

flywheel to burst).

11. Shut off the engine before

setting the chainsaw down.

2. Use extreme caution when

cutting small size brush and

saplings because slender mate-

rial may catch the saw chain

and be whipped toward you or

pull you off balance.

. Do not start cutting until you

have a clear work area, secure

footing, and a planned retreat

path from the falling tree.

18. When transporting your chain-

saw, use the appropriate chain

guard (scabbard).

. Keep all parts of your body

away from the saw chain when

the engine is running.

13. When cutting a limb that is

under tension be alert for

Other important safety precautions

are contained in the body of the

Owner’s Manual.

springback so that you will not

be struck when the tension in

the wood fibers is released.

. Before you start the engine,

make sure that the saw chain

is not contacting anything.

Note:

4. Keep the handles dry, clean,

. Carry the chainsaw with the

engine stopped, the guide bar

and saw chain to the rear, and

the muffler away from your

body.

and free of oil or fuel mixture.

When using a chainsaw for logging

purposes, refer to the Code of

Federal Regulations, Parts 1910

and 1928.

15. Operate the chainsaw only in

well-ventilated areas.

6. Do not operate a chainsaw in a

tree unless you have been

specifically trained to do so.

17. All chainsaw service, other than

the items listed in the Owner’s

ä WARNING!

The engine exhaust from this product

contains chemicals known to the State

of California to cause cancer, birth

defects or other reproductive harm.

englisch / english / USA / CARB / EPA