Il l u s t r a t e d Pa r t s Ma n u a l
Two-Stage Snow Thrower — 300 Series
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Printed In USA
Form No. 769-04056
September 02, 2008)
(
Augers, Auger Housing & Discharge Chute
7
2
0
3
1
2
6
9
5
1
2
1
0
1
2
1
8
14
32
3
11
2
2
16
3
3
1
8
1
5
28
7
4
8
2
3
4
38
2
6
1
7
2
0
20
30
1
3
2
4
2
1
4
7
4
0
46
3
3
1
9
4
5
4
6
2
2
0
37
2
5
2
3
35
4
0
4
2
3
6
4
3
41
2
9
4
4
3
9
2
Augers, Auger Housing & Discharge Chute
Ref. Part Number
Description
Ref. Part Number
Description
1
2
3
4
5
684-04037
710-04071
710-0451
710-0260A
720-0284
Chute Assembly
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
731-04218B
732- 0611
Impeller
Carriage Bolt 5/16-18 x 1.0”
Carriage Bolt 5/16-18
Carriage Bolt 5/16-18 x .62
Wing Knob 5/16-18 Black
Wing Knob 5/16-18 Yellow
Chute Handle
Extension Spring
Wave Washer
736-0174
738-0281
Shoulder Screw 3/8-16
Hex Flange Bearing
Ball Bearing
741-0245
720-04032
741-0309
6
7
8
9
731-04388A
731-04426A
736-0267
731-04127
731-04353
731-2636A
732- 04111
712-04064
731-2643
750-04191
741-0919
Spacer
Upper Chute
Flat Idler
Flat Washer .385 x .87 x .06
Lower Chute
784-0434
790-00075
618-04292A
684 - 04113A
684 - 04114A
684-04166A
714-04040
731-04870
736-0351
Auger Idler Bracket
Bearing Housing
Auger Gearbox Assembly
Auger Assembly - LH
Auger Assembly - RH
Auger Housing, 22”
Bow Tie Cotter Pin 72
Spacer, 1.25 x.75 x 1.00
Flat Washer
10
Chute Ring
11
Chute Adapter 5” Dia.
Chute Adjustment Spring
Flange Lock Nut 1/4-20
Clean-out Tool
12
13
14
15
731-2635
Clean-out Tool Mount
Cable Tie
16
725-0157
17
710-0134
Carriage Screw 1/4-20 x 0.62”
Hex Bolt 3/8-16 x 1.50”
AB Screw 5/16-18 x .750
Flange Lock Nut, 5/16-18
Flange Lock Nut, 3/8-16
Shoulder Spacer
738-04124A
741-0493A
790-00087A
790 - 00117
784-5580
Shear Pin,.25 x 1.50
Flange Bushing
Hex Bearing Housing
Shave Plate 2.25 x 21.66 LG
Skid Shoe
18
710-0520
710-04484
712-04063
712-04065
750-04852
715-04020
726-04012
19
20
21
22
23
24
710-04606
726-0233
Belt Keeper
Spiral Pin
Push Nut
Push On Nut
3
Handle, Frame & Drive System
37
41
9
1
0
50
8
45
7
47
50
4
0
6
56
4
5
1
2
4
8
5
5
5
0
2
42
9
40
3
3
4
5
5
4
49
4
4
1
3
1
1
1
2
9
1
6
2
15
18
6
3
6
5
3
28
3
2
3
30
2
7
16
25
23
3
4
36
1
4
2
8
2
4
1
3
8
8
5
1
2
5
22
1
7
19
21
3
5
20
3
3
3
4
4
Handle, Frame & Drive System
Ref.
Part No.
Description
Ref.
Part No.
Description
1
2
3
4
5
6
7
8
9
710-0449
Carriage Screw 5/16-18 x 2.25
Mach. Screw 1/4-20 x 1.825
Screw 5/16-18 x .75
Flange Lock Nut 1/4-20
Wing Knob 5/16-18
Cable Tie
29
30
31
32
33
34
35
36
37
38
756-0625
784-0419C
790-00223A
790-00224
634-04282A
710-0627
Cable Roller
710-0605
710-04484
712-04064
720-0284
725-0157
Drive Housing Frame
Auger Cable Bracket
Auger Cable Adj. Bracket
Wheel Assy. Snow Hog Gray
Lock Bolt 5/16-24 x .75
Bell Washer .34 x .872 x .06
Axle
746-04256
746-04236
747-1161A
747-1214
Drive Cable
736-0242
Auger Cable
738-04321
710-0224
Auger Control
Hex Screw #10-16 x .500
TT Sems. Screw 3/8-16 x 1.0
Hex Bolt 3/8-24 x .875
Lock Bolt 5/16-24 x .875
Belt Cover
10
Drive Control
710-0654A
710-0696
710-1245B
731-04162A
736-0247
3
9
0
11
749-04147
749-04459
790-00053
618-04296A
710-0809
710-1652
Lower Handle
4
12
Upper Handle
41
13
Handle Tab
42
Flat Washer .406 ID x 1.25 OD
Flat Washer .34 ID x 1.50 OD
Pulley: Adapter .75 Dia.
Spacer .876 x 1.25 x .19
Spacer .876 x 1.25 x .86
V-belt 3/8 x 21.108 Lg.
V-belt 3/8 x 26.680 Lg.
Auger Pulley
14
Transmission Assembly
TT Screw 1/4-20 x 1.25
Screw 1/4-20 x .625
Clevis Pin
43
44
45
46
736-0505
748-04067A
750-1355
15
16
17
711-1364
750-1356
18
714 - 0115
Cotter Pin 1/8 x 1.0
Bow Tie Cotter Pin 72
Roll Pin
47
754-04013
754-04014
756-04024
756-0569
736-0287
731-05672A
736-0160
19
714-04040
715-0249
48
49
50
20
21
717-04066A
717-04073A
732-0429A
736-0192
738-04184A
738-0924A
741-0245
Pinion 14T
Pulley Half
22
23
24
25
26
27
28
Gear 70T
51
Flat Washer .793 x 1.24 x .06
Spacer
Extension Spring
Flat Washer
52
53
54
Flat Washer .53 x .93 x .05
Saddle Washer
Shoulder Screw 1/4-20
Shoulder Screw 1/4-28
Hex Flange Bearing
Hex Flange Bearing
736-0451
750-04913
729-04035*
55
Spacer
56
Engine Accessory Cap
741-04108
*365 SUA Engines with electric start.
5
179 cc ZS 165 SU/365-SUA Engine
6
179 cc ZS 165 SU/365-SUA Engine
Ref.
No.
Ref.
No.
Part No.
Description
Part No.
Description
751-10724
Short Block Assembly
Bolt
—
751-10722
Cylinder Head Assembly
Valve Cover Gasket
Plate Push Rod Guide
Pivot Bolt
—
47
49
50
51
1
Oil Filler Plug
2
O-ring
3
Oil seal, 25 × 41.25 × 6
Crankcase cover
Radial Ball Bearing
Camshaft Assembly
Dowel Pin, 9 × 14
Dowel Pin, 7 × 14
Crankcase Cover Gasket
Crankshaft Complete
Governor Kit
4
Rocker Arm
5
Valve Adjusting Nut
Pivot Locking Nut
Cylinder Head Complete
Cylinder Head Gasket
Gasket Muffler
52
53
54
55
59
98
99
100
101
102
103
104
—
10
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
55
56
59
61
62
91
92
93
94
Exhaust Valve
Valve Seal
Spring Valve
Radial Ball Bearing
Pin Lock
Exhaust Valve Spring Retainer
Exhaust Valve Adjuster
Intake Valve
O-ring, 5.2 × 1.9
Governor Arm
Internal Valve Spring Retainer
Gasket Kit - Complete
Crankcase Cover Gasket
O-ring, 5.2 × 1.9
Crankcase
751-10723
Oil-Draining Pipe
Washer, 10 × 16 × 1.5
Drain Bolt, 10 × 1.25
Oil Seal, 25 × 41.25 × 6
Cylinder Head Gasket
Dowel Pin, 10 × 16
Gasket Muffler
15
Oil-Draining Pipe
Washer, 10 × 16 × 1.5
Drain Bolt, 10 × 1.25
Oil Seal, 25 × 41.25 × 6
Gasket
18
19
20
21
42
47
55
59
61
Insulator Gasket Carburetor
Insulator Carburetor
Connecting Rod Assembly
Piston Pin Clip
Valve Cover Gasket
Cylinder Head Gasket
Gasket Muffler
Carburetor Insulator Gasket
Carburetor Insulator
Carburetor Gasket
Push Rod
Piston
62
63
97
98
103
Pin Piston
Exhaust Valve
Intake Valve
7
179 cc ZS 165 SU/365-SUA Engine
Ref.
No.
—
Ref.
No.
32
Part No.
Description
Part No.
Description
7
51-10952
Gasket Kit - External
751-10911
751-10642A
751-10643
Starter Cup
Valve Cover Gasket
Gasket Muffler
Carburetor Insulator Gasket
Carburetor Insulator
Gasket Carburetor
Carburetor Assembly
Fuel Drain Plug
Fuel Cup Fixed Bolt Packing
Fuel Drain Plug
Fuel Drain Plug Gasket
Fuel Cup
47
Muffler Shroud
Muffler Shield
37
40
59
61
Muffler Complete
Exhaust Pipe
41,
43
7
51-10644
62
7
51-10666
51-10657
51-10292
51-10640
51-10635
51-10637
51-10630
51-10634
51-10636
51-10654
51-10664
51-10665
51-10758
51-10757
51-10645A*
51-10648
Gasket
42
57
58
66
69
70
71
72
73
77
78
79
81
82
84
97
63
7
Muffler Stud Assembly, 8 × 34
Spark Plug
7
51-10974
65
7
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
7
Choke Push Rod
Air Filter Heating Pipe Cover
Key Switch
7
7
7
Key
7
Shroud
Float
7
Choke Knob
Floating Pin
7
Spring Governor
Spring Throttle Return
Rod Governor
Needle Valve Spring
Needle Valve
7
7
O-ring Packing
Main Jet
7
Throttle Control Assembly
Throttle Control Knob
Electric Starter, 110v
Push Rod Kit
7
Main Nozzle
7
Idle Jet Assembly
Idle Speed Adjusting Screw
Carburetor Body
Fiber Seal
7
9
8,
751-10647
Valve Kit
103
7
51-10655
51-10656
51-10662
51-10649
51-10663A
51-10652
51-10653A
51-10651
Dipstick
107
108
110
111
112
113
115
116
Choke Plate
7
Dipstick Base
Dipstick Decoration Cover
Fuel Tank Cap
Blower Housing
Fuel Filter
Throttle Shaft
Choke Plate
7
7
Choke Shaft
7
Cross Screw
7
Position Spring
Clip
7
Fuel Tank
7
Nipple Fuel Tank
Fuel Hose
1
17,
7
51-10650
Fuel Line Kit
Primer Base
118
Primer Bulb
7
51-10658
Recoil Starter Assembly
Starter Handle
121
—
1
8,
7
51-10641
Oil Drain Assembly
19,
7
51-10639
Primer
147
149
—
20
7
51-10307
Woodruff Key
7
51-10646*
51-10719*
51-10805
51-10909
Ignition Module
Stator
22
28
30
31
9
52Z165-SU
Complete 165-SU Engine
7
9
52Z365-SUA
Complete 365-SUA Engine
—
7
Flywheel
7
Cooling Fan
*365 SUA Engines with electric start.
8
