Troy-Bilt 640 Series Setup guide

TROY-BILT LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

Printed In USA

Il l u s t r a t e d Pa r t s Ma n u a l

Small Frame Tiller — 640 & 650 Series

Form No. 769-03893

(February 22, 2008)

640 & 650 Series Handle & Tine Shield

12 18 46

10 14

24 40

47 39

640 & 650 Series Handle & Tine Shield

Ref. Part Number Description

1. 686-04076 Tine Hood Assembly (A)

—686-04077 Tine Hood Assembly (B, C)

2. 710-0395 Hex Screw, ⁄-18 x 2.25

3. 710-0597 Hex Head Screw, ⁄-20 x 1

4. 710-0599 Self-Tapping Screw, ⁄-20 x ⁄

5. 710 - 0874 Hex Head Screw, ⁄-18 x 1-⁄

6. 710-3008 Hex Head Screw, ⁄-18 x .75

7. 712- 04063 Nylon Hex Lock Nut, ⁄-18

8. 712- 04064 Nylon Hex Lock Nut, ⁄-20

9. 715-0108 Spirol Pin

10. 732-04320 Depth Regulator Spring

11. 736-0275 Flat Washer, ⁄

12. 750 -04149 Spacer, .462 x .328 x 1.63

13. 750-04160 Bushing

14. 750-04556 Spacer

15. 786-04092 Reverse Stop Arm

16. 786-04098 Channel Support Bracket

17. 786-04104 Drag Bar

18. 786-04191 Flap Stop Bracket

19. 786-04290 Hood Bracket, Left Hand

20. 786-04291 Hood Bracket, Right Hand

21. 786-04292 Adjustable Depth Bar

22. 710-0106 Hex Hd. Screw, ⁄-20 x 1-⁄

23. 710-04163 Screw, #10-24 x 2

24. 712-3009 Hex Lock Nut, ⁄-18

25. 712-0121 Hex Nut, #10-24

Ref. Part Number Description

26. 712- 0291 Hex Lock Nut, ⁄-20

27. 732-04185 Forward Clutch Spring

28. 746-04208 Forward Clutch Cable Assembly

29. 746-04058 Rev. Clutch Cable Assembly (B, C)

30. 747-04210 Forward Clutch Bail

31. 749 - 04084 Upper Handlebar

32. 749-04208 Lower Handlebar

33. 749-04106 Conduit Mount Tab

34. 786-04040 Reverse Clutch Cable Bracket (B, C)

35. 786-04188 Handlebar Support

36. 786-04200 Panel

37. 710-0216 Hex Screw, ⁄-16 x ⁄

38. 710-0805 Hex Screw, ⁄-18 x 1-⁄

39. 712-3000 Hex Lock Nut, ⁄-16

40. 736 - 0119 Lock Washer, ⁄

41. 725-0157 Cable Tie

42. 736-3050 Flat Washer, ⁄

43. 712-04065 Flange Lock Nut, ⁄-16

44. 710-0347 Hex Hd. Screw, ⁄-16 x 1-⁄

45. 710-0514 Hex Hd. Screw, ⁄-16 x 1

46. 710-04048 Flange Screw, .312-18 x 1.00

47. 742- 0 4117 Single Bolo Tine Left Hand

48. 742- 0 4116 Single Bolo Tine Right Hand

49. 686-04066 Tine Holder (A)

— 686-04065 Tine Holder (B, C)

(A) — Bronco

(B) — Super Bronco

640 & 650 Series Drive System

13 49

18 38

641

43 50

31 35

33 22

Bronco

Engine shown for reference only.

640 & 650 Series Drive System

Ref. Part Number Description

1. 736-0159 Flat Washer, ⁄

2. 756-04198 Engine Drive Pulley

3. 656-04023A Transmission Pulley (A)

—656-04005A Transmission Pulley (B, C)

4. 756-04169 Reverse Idler Pulley (B, C)

5. 786-04095 Belts/Pulleys Guard

6. 754-04090 Forward Drive Belt

7. 754-04091 Reverse Drive Belt (B, C)

8. 731-05268 Belt Cover

9. 732-04289 Reverse Return Spring (B, C)

10. 732-04081 Belt Guide (B, C)

11. 732-04079 Belt Guide

12. 786-04068 Engine Bracket Left

13. 786-04069 Engine Bracket Right

14. 786-04070 Belt Cover Bracket

15. 748- 04087 Shoulder Washer

16. 786-04276 Reverse Idler Arm (B, C)

17. 786-04275 Forward Idler Lever

18. 710 - 0117 Hex Head Screw, ⁄-24 x 1

19. 710-0237 Hex Head Screw, ⁄-24 x ⁄

20. 710-0376 Hex Head Screw, ⁄-18 x 1

21. 710-04049 Hex Head Screw, ⁄-18 x ⁄

22. 710-0347 Hex Head Screw, ⁄-16 x 1-⁄ (A)

—710-0520 Hex Head Screw, ⁄-16 x 1.50 (B, C)

23. 710-0599 Self-Tapping Screw, ⁄-20 x ⁄

24. 710-3103 Hex Head Screw, ⁄-18 x 2 (B, C)

25. 712-3000 Lock Nut, ⁄-16

26. 712-3009 Lock Nut, ⁄-18 (B, C)

Ref. Part Number Description

27. 73 6 - 0119 Lock Washer, ⁄ (A)

28. 750-0535 Spacer, .380 ID x .625 OD x .21 (A)

—736-3050 Flat Washer, .406 x .812 x .051 (B, C)

29. 736-3090 Flat Washer, .260 x .720 x .060

30. 736-0452 Bell Washer, .396 x 1.140 x .095

31. 710-0459A Hex Head Screw, ⁄-24 x 1.50

32. 736-04181 Support Washer, .690 x 1.250 x .075

33. 732-04085 Forward Return Spring

34. 786-04107 Cable Mounting Bracket

35. 756 - 04170 Forward Idler Pulley

36. 714-0105 Key, ⁄” x 1”

37. 736-3078 Flat Washer, .344 x 1.00 x .063

38. 736-04193 Belleville Washer, .827 x .331 x .098

39. 710-0805 Hex Screw, ⁄-18 x 1.50 (A, B)

—710-0395 Hex Screw, ⁄-18 x 2-⁄ (C)

40. 712-04063 Hex Lock Nut, ⁄-18

41. 750-0258 Shlder Spacer, .315 x .750 x .375 (A)

42. 736-0315 Flat Washer, .75 x 1.5 x .125 (A)

—736-04192 Flat Washer, .786 x 1.000 x .031 (B, C)

43. 736-0242 Bell Washer, .340 x .872 x .060

44. 749-04193 Bumper (C)

45. 726-0201 Speed Nut, ⁄-18 (C)

46. 714-0143 Klik Pin

47. 734- 04188 Complete Wheel Ass., 10 x 2.75 (A)

48. 634-04232 Complete Whl. Ass., 13 x 5 x 6 (B, C)

49. 618-04360A Transmission Assembly (A)

—618-04362 Transmission Assembly (B, C)

50. 710-0672 Hex Head Screw, ⁄-24 x 1.25

(A) — Bronco

(B) — Super Bronco

640 & 650 Series Transmission Assembly

426 18

17 11

20 25

20 11

640 & 650 Series Transmission Assembly

Ref. Part Number Description

1. 1918377 Cover Housing

2. 619- 04013 Transmission Housing

3. 710-04048 Hex Head Flange Screw

4. 710-04049 Hex Head Flange Screw

5. 710-3008 Hex Screw

6. 711- 0 4078 Tiller Shaft

7. 711- 0 4 4 8 6 Wheel Shaft

8. 711- 0 48 82 Drive Shaft

9. 714-04059 Hi-Pro Key

10. 716-04102 Retaining Ring

11. 716-04104 Retaining Ring

12. 717- 04380 Worm Gear, 61T

13. 717- 04381 Worm Gear, 30T

14. 718-04008 Rear Bearing Cover

15. 721-04030 Oil Seal, .75 x 1.783

16. 721-04031 Oil Seal, 1.0 x 1.499

17. 721-04036 Oil Seal, 1.0 x 1.5

18. 721-04229 Gear Housing Gasket

19. 73 6 - 0119 Lock Washer

20. 736-04309 Flat Washer, 1.375 x 1.015 x .062*

—736-04308 Flat Washer, 1.5 x 1.75 x .01*

—736-04307 Flat Washer, 1.5 x 1.75 x .03*

—736-04306 Flat Washer, 1.5 x 1.75 x .005*

—736-04305 Flat Washer, 1.5 x 1.75 x .062*

—736-04304 Flat Washer, 1.25 x .75 x .06*

—736-04260 Flat Washer, 1.015 x 1.375 x .03*

— 736-04259 Flat Washer, 1.015 x 1.375 x .015*

—736-04258 Flat Washer, 1.015 x 1.375 x .01*

—736-04257 Flat Washer, 1.015 x 1.375 x .005*

21. 736-04310 Flat Washer, 1.015 x 1.234 x .062

22. 737-04202 Pipe Plug

23. 741-04298 Cone Bearing

24. 741- 04299 Cup Bearing

25. 741-04300 Bushing, 1.005 x 1.25 x 1.5

26. 786-04359 Transmission Cover

27. GW-1104 Woodru Key, .25 x 1.12

* — The at washers listed are used as required to obtain .005 to

.030 in allowable end play on the wheel shaft and tine shaft and

a .005 to .015 in end play on the drive shaft.

Troy-Bilt Engine (170-TO)

Part No. Part Description Ref

No. Qty.

751-10806 Air Filter Heating Pipe Base 20 1

751-10792 Ignition Complete 22 1

751-10818 Air Filter Housing 24 1

751-10794 Air Filter 24 1

751-10796 Fuel Tank 28 1

751-10790 Recoil Starter Assembly 34 1

751-10649 Fuel Filler Cap Complete 38 1

751-10654 Governor Spring 44 1

751-10657 Stud 8 × 34 57 2

751-10292 Spark Plug 58 1

751-10793 Muer 64 1

751-10662 Dipstick Decoration Cover 65 1

751-10648 Push Rod Kit 71/72 —

Valve Lifter 71 2

Push Rod 72 2

751-10647 Valve Kit 73/74 —

Inlet Valve 73 1

Exhaust Valve 74 1

751-10651 Fuel Tank Nipple 79 1

751-10655 Dipstick 82 1

751-10656 Engine/Dipstick Cover 83 1

751-10797 Carburetor 90 1

751-10799 Cylinder Head — —

Rocker Arm 51 2

Valve Adjusting Nut 52 2

Pivot Locking Nut 53 2

Cylinder Head Complete 54 1

Dowel Pin 56 2

Muer Gasket 59 1

Part No. Part Description Ref

No. Qty.

751-10798 Short Block — —

Bolt 1 6

Oil Filler Plug 2 1

O-Ring 3 1

Oil Seal 4 1

Left Crankcase Cover 5 1

Radial Ball Bearing 6 1

Camshaft Assembly 7 1

Dowel Pin 8 1

Dowel Pin 9 1

Case Cover Packing 10 1

Crankshaft Complete 11 1

Governor Kit 12 1

Radial Ball Bearing 13 1

Lock Pin 14 1

O-Ring 15 1

Governor Arm 16 1

Crankase Complete 17 1

Oil Seal 21 1

Carburetor Packing 25 1

Bolt 28 1

Nut 29 2

Head Cover Gasket 47 1

Cylinder Head Gaskket 55 1

Carburetor Insulator Packing 61 1

Carburetor Insulator 62 1

Connecting Rod Assembly 66 1

Piston Pin Clip 67 2

Piston 68 1

Piston First Ring Set 69 1

Piston Pin 70 1

751-10307 Flywheel Key (Not Shown) — —

751-10800 Carb. Kit Major (Not Shown) — —

751-10801 Gasket Kit — Ext. (Not Shown) — —

751-10802 Gasket Kit — Comp. (Not Shown) — —

Notes

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