Models 643 & 663
4
1
7
1
1
9
1
6
13
8
15
1
1
4
10
5
6
7
3
12
2
3
Ref.
No.
Part No.
Part Description
1
.
618-0123
618-0124
710-0642
711-0910A
714-0161
715-0143
717-0528
717-0526
718-0186
721-0325
721-0327
736-0351
736-0369
736-0445
741-0662
741-0663
618-0122A
RH Housing
2.
LH Housing
3.
Self Tapping Screw, 1/4-20 x .75
Spiral Axle, 28”
4.
5.
Hi-Pro Key, 3/16 x 5/8
Spring Spiral Pin, .25 x 1.25
Worm Gear, 20-tooth
Worm Shaft
6.
7.
8.
9.
Thrust Collar
1
1
1
1
1
1
1
1
0.
1.
2.
3.
4.
5.
6.
7.
Grease Plug
Grease Seal
Flat Washer, .76 x 1.5 x .030
Flat Washer, .508 x 1.0 x .020
Flat Washer, .76 x 1.5 x .060
Flange Bearing, .75 x 1.0 x .59
Flange Bearing, .503 ID x .75 OD
Gear Ass’y Complete, 28”
1
7
Models 643 & 663
6
8
2
7
72
5
3
70
7
3
2
7
80
6
9
8
27
71
8
2
2
4
55
6
5
5
27
6
8
3
74
6
3
5
9
6
7
6
9
27
5
4
3
0
8
1
6
7
8
6
7
7
24
7
5
6
6
0
7
9
1
1
7
5
5
6
4
6
32
1
5
1
3
1
3
8
2
1
4
1
7
2
0
2
2
1
0
1
4
2
1
3
1
1
1
8
1
6
1
2
28
4
1
4
4
3
1
10
2
6
11
26
15
9
19
4
9
3
1
48
1
4
9
4
3
7
1
2
2
3
3
9
1
8
4
3
5
2
6
3
8
2
40
4
2
9
1
8
Models 643 & 663
Ref.
Ref.
No.
Part No.
No.
Part Description
Shift Arm Assembly
Part No.
Part Description
Lower Chute
1
2
3
4
5
6
7
8
9
.
.
.
.
.
.
.
.
.
684-0008A
710-0458
710-0449
710-0788
712-0429
746-0778
710-1880
711-0677
747-0697
39.
40.
41.
43.
47.
48.
49.
53.
54.
55.
56.
57.
59.
60.
63.
64.
65.
67.
68.
69.
70.
71.
72.
73.
74.
75.
76.
77.
78.
79.
80.
81.
82.
83.
731-1300B
710-3015
731-0921
736-0159
746-0901
741-0475
736-0159
684-0036A
684-0037B
710-1003
712-0271
712-0693
720-0232
725-1672
725-1658
726-0152
731-04144
747-1136
714-0507
747-0877
784-5680
784-5679
748-0362
748-0363
732-0145
710-0459A
784-5619A
712-0116
732-0193
736-0105
784-5682
784-5681
711-0653
684-0103
Carriage Bolt 5/16-18 x 1.75”
Carriage Bolt 5/16-18 x 2.25”
TT Screw 1/4-20 x 1”
Hex Lock Nut 5/16-18
Z Fitting Cable
Hex Cap Screw 1/4-20 x .75
Upper Chute
5/16 Washer
Control Cable
Plastic Bushing
Hex Screw 5/16-18 x .75”
Ferrule
5/16 Washer
Handle Assembly RH
Handle Assembly LH
Special Hex Screw
Hex Sems Nut: 1/4-20
Hex Nut
Eyebolt
7
35-0234
Grommet Only
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
3
3
3
3
3
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
1.
2.
3.
4.
5.
6.
7.
8.
0.
1.
2.
5.
8.
712-3068
714-0104
720-0284
720-0274
736-0242
736-0275
736-0451
747-0620A
747-0621
749-0951
749-0952A
749-0953A
750-0963
784-5647
736-0509
710-0262
710-0451
710-0599
712-3010
732-0746
710-0276
735-0199A
712-3027
731-0851A
Hex Nut 5/16-18
Cotter Pin
Handle Knob
Shift Knob
Grip
Lamp Housing
Belleville Washer
Flat Washer
Halogen Lamp: 50W, 12V
Mounting Clamp
Saddle Washer
Handle Panel
Shift Rod: Upper
Headlight Retainer
Cotter Pin: 3/32 x .75
Cam Rod
Shift Rod: Lower
Lower Handle
Upper Handle: L Style RH
Upper Handle: L Style LH
Connector: Shift Rod
Chute Crank Bracket
Washer .72 OD x .135 ID
Carriage Bolt: 5/16-18 x 1.5”
Carriage Bolt: 5.16-18 x .750”
TT Screw: 1/4-20 x 0.5”
Hex Nut 5/16-18
RH Handle Support Bracket
LH Handle Support Bracket
Cam Handle Lock
Handle Lock Pawl
Compression Spring: .36 x 1.0
Hex Cap Screw: 3/8-24 x 1.5
Shift Handle
Jam Nut, 3/8-24
Comp. Spring: .39 x .6 x .88
Bell Washer
Torsion Spring
Carriage Screws 5/16-18 x 1.0
Rubber Bumper
RH Handle Support Bracket
LH Handle Support Bracket
Clevis Pin
Hex Flange Lock Nut
Chute Flange Keeper
Handle Panel
1
9
Models 643 & 663
4
9
2
1
3
4
4
3
8
5
4
3
4
7
1
1
10
9
15
6
1
4
1
2
7
8
1
44
1
6
5
1
1
8
2
7
10
3
4
2
8
5
2
9
13
2
6
3
8
35
3
0
19
3
2
3
1
1
8
3
1
1
6
50
36
41
30
3
3
3
7
1
4
7
0
3
9
40
24
3
9
4
2
2
9
2
0
Models 643 & 663
Ref.
Ref.
No.
Part No.
No.
Part Description
Part No.
Part Description
1
.
712-0116
756-0178
784-5632B
710-0459A
738-0281
736-0167
732-0611
712-3068
710-0276
736-0119
05931A
Lock Jam Nut 3/8-24
Flat Idler
784-5038B
736-0242
712-3010
784-5582A
710-0260
684-0065
715-0114
618-0122A
605-5196A
736-0188
741-0493A
605-5197A
710-0890A
714-0104
736-0185
705-5204A
720-0201A
726-0100
712-3068
731-2643
731-2635
777I20711
777I20722
777S30514
777S30511
Skid Shoe (If Equipped)
Bell Washer
2.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
47.
48.
49.
50.
51.
52.
3.
Auger Idler Arm
Hex Nut 5/16-18
Shave Plate
4.
Hex Cap Screw 3/8-24 x 1.50
Shoulder Screw
5.
Carriage Bolt 5/16-18 x .62
Impeller Assembly
Pin
6.
Wave Washer
7.
Extension Spring
Hex Nut 5/16-18
8.
28” Gear Ass’y
9.
Carriage Bolt, 5/16-18 x 1.00
Lock Washer 5/16
Bearing Housing
Ball Bearing
28” Spiral RH
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
3
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
4.
6.
7.
8.
9.
0.
Flat Washer
Flange Bushing
28” Spiral LH
741-0309
710-0451
705-5226
684-0041D
712-3010
712-0429
736-0242
736-0231
784-5618
710-0604A
736-0169
712-0798
741-0245
784-5580
Carriage Bolt, 5/16-18 x .75
Chute Reinforcement
28” Housing Ass’y
Hex Nut 5/16-18
Shear Bolt 5/16-18 x 1.5
Hairpin Clip
Flat Washer
Chute Crank
Lock Nut 5/16-18
Belleville Washer
Flat Wshr, .344ID x 1.125 OD
Bearing Housing
Hex Screw 5/16-18
Lock Washer 3/8
Hex Nut 3/8-16
Chute Crank Knob
Push Cap
Hex Nut 5/16-18
Clean-Out Tool
Clean-Out Tool Mount
Label: Handle Panel (L)
Label: Handle Panel (R)
Label: Housing Danger
Label: Chute Danger
Hex Flange Bearing
Slide Shoe
2
1
Models 643 & 663
2
6
2
8
2
9
1
3
0
2
7
2
3
6
3
4
8
9
4
7
1
0
1
1
1
2
1
6
1
5
1
9
6
5
16
1
6
1
9
1
1
6
2
1
3
2
2
1
7
4
2
3
1
1
8
31
33
2
5
20
24
3
4
IMPORTANT: For a proper working machine, use Factory
Approved Parts.
3
2
V-BELTS are specially designed to engage and disengage
safely. A substitute (non OEM) V-Belt can be dangerous by
not disengaging completely
35
2
2
Models 643 & 663
Ref.
No.
Part No.
710-1652
Part Description
1
2
3
4
5
6
7
8
9
.
.
.
.
.
.
.
.
.
Hex Washer Screw 1/4-20 x .625
Belt Cover
731-1324
732-0710
710-0627
710-3005
05896A
Extension Spring
Hex Screw 5/16-24 x .75
Hex Cap Screw 3/8-16 x 1.25
Drive Clutch Idler Bracket
Shoulder Spacer
Pulley Half
748-0234
756-0987
754-0346
756-0986
736-0270
710-0230
756-0313
710-1245B
712-0181
756-0569
736-0242
736-0505
754-0430B
756-0967
736-0247
736-0331
710-0696
748-0360
710-0654A
629-0071
OEM-390-987
712-0324
736-0173
732-0705
738-0830
734-1712A
734-1525
734-0255
734-1711A
629-0059
V-Belt
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
1.
2.
3.
4.
5.
6.
Pulley Half
Bell Washer
Hex Cap Screw 1/4-28 x .50
Flat Idler
Lock Hex Cap Screw 5/16-24
Lock Jam Nut 3/8-16
Pulley Half
Bell Washer
Flat Washer
Belt
Auger Pulley
Flat Washer 3/8 x 1.25 OD
Bell Washer
Hex Cap Screw 3/8-24
Adapter Pulley
Hex Screw 3/8-16 x 1.0
Extension Cord
Electric Start Kit
Lock Nut, 1/4-20
Flat Washer, .28 x .74 x .063
Cable Guide
Axle 16”
Wheel Ass’y Comp 16.5” x 4.8”
Tire 16.0” x 6.50” x 8.0”
Tubeless Air Valve
Rim Assembly
Upper Harness Assembly
2
3
Models 643 & 663
2
0
2
7
3
9
4
6
Drive Clutch
Cable
42
37
5
Auger Clutch
Cable
4
1
3
1
7
1
1
1
3
8
6
1
0
3
40
4
2
1
1
4
26
15
5
3
6
6
4
2
2
5
16” Wheels
4
2
1
3” or 15” Wheels
10
11
7
9
31
25
4
3
1
2
28
23
1
7
8
18
4
3
2
24
1
2
2
4
1
3
3
2
0
2
1
5
8
Auger Clutch
Cable
2
9
3
4
44
1
9
35
45
Blower
Housing
3
0
1
1
2
4
Models 643 & 663
Ref.
Ref.
No.
Part No.
No.
Part Description
Hex Screw
Part No.
Part Description
Roll Pin
1
2
3
4
5
6
7
8
9
.
.
.
.
.
.
.
.
.
710-0599
784-5688
784-5687A
756-0625
738-0924
784-5630B
741-0563
736-0105
712-0116
741-0598
736-0188
784-5689A
710-0538
736-0242
714-0474
736-0160
710-0809
784-5590
784-5638
710-0599
736-0351
717-1445
714-0126
717-1444
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
715-0249
714-0143
684-0042C
656-0012A
684-0013B
746-0897
748-0190
684-0021
732-0264
712-0711
746-0898B
738-0869
738-0830
790-00010
735-0243B
718-0301A
618-0063A
710-1652
712-0703A
711-1364
736-0142
714-0507
790-00011
Drive Cable Guide Bracket
Auger Clutch Cable Bracket
Roller Cable
Klik Pin
Friction Wheel Assembly
Friction Disc Wheel
Wheel Shift Rod Assembly
Drive Cable
Hex Screw 1/4-28
Frame Assembly
Ball Bearing
Spacer
Bell Washer
Friction Wheel Bracket Assembly
Extension Spring
Jam Nut 3/8-24
Lock Jam Nut
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
1.
2.
3.
4.
Hex Flange Bearing
Flat Washer
Drive Cable
Front Support Guide Bracket
Lock Hex Screw
Axle 13” Wheels
Axle 16” Wheels
Friction Plate
Bell Washer .340 ID x .872 OD
Cotter Pin
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
Friction Wheel Rubber
Friction Wheel Hub
Friction Wheel Bearing
Tap Screw 1/4-20
Insert Nut 5/16-18
Clevis Pin
Flat Washer .536 ID x .930 OD
Hex Washer Screw 1/4-20
Frame Shift Bracket
Frame Cover
Hex Washer Screw 1/4-20
Flat Washer .760 ID x .50 OD
Gear
Flat Washer .281 ID x .50 OD
Cotter Pin
Key
Friction Plate
7-Tooth Shaft
2
5
