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21
Models 643 & 663
Ref.
No.
Part No. Part Description
1. 712-0116 Lock Jam Nut 3/8-24
2. 756-0178 Flat Idler
3. 784-5632B Auger Idler Arm
4. 710-0459A Hex Cap Screw 3/8-24 x 1.50
5. 738-0281 Shoulder Screw
6. 736-0167 Wave Washer
7. 732-0611 Extension Spring
8. 712-3068 Hex Nut 5/16-18
9. 710-0276 Carriage Bolt, 5/16-18 x 1.00
10. 736-0119 Lock Washer 5/16
11. 05931A Bearing Housing
12. 741-0309 Ball Bearing
13. 710-0451 Carriage Bolt, 5/16-18 x .75
14. 705-5226 Chute Reinforcement
15. 684-0041D 28” Housing Ass’y
16. 712-3010 Hex Nut 5/16-18
17. 712-0429 Lock Nut 5/16-18
18. 736-0242 Belleville Washer
19. 736-0231 Flat Wshr, .344ID x 1.125 OD
24. 784-5618 Bearing Housing
26. 710-0604A Hex Screw 5/16-18
27. 736-0169 Lock Washer 3/8
28. 712-0798 Hex Nut 3/8-16
29. 741-0245 Hex Flange Bearing
30. 784-5580 Slide Shoe
784-5038B Skid Shoe (If Equipped)
31. 736-0242 Bell Washer
32. 712-3010 Hex Nut 5/16-18
33. 784-5582A Shave Plate
34. 710-0260 Carriage Bolt 5/16-18 x .62
35. 684-0065 Impeller Assembly
36. 715-0114 Pin
37. 618-0122A 28” Gear Ass’y
38. 605-5196A 28” Spiral RH
39. 736-0188 Flat Washer
40. 741-0493A Flange Bushing
41. 605-5197A 28” Spiral LH
42. 710-0890A Shear Bolt 5/16-18 x 1.5
43. 714-0104 Hairpin Clip
44. 736-0185 Flat Washer
47. 705-5204A Chute Crank
48. 720-0201A Chute Crank Knob
49. 726-0100 Push Cap
50. 712-3068 Hex Nut 5/16-18
51. 731-2643 Clean-Out Tool
52. 731-2635 Clean-Out Tool Mount
777I20711 Label: Handle Panel (L)
777I20722 Label: Handle Panel (R)
777S30514 Label: Housing Danger
777S30511 Label: Chute Danger
Ref.
No.
Part No. Part Description