Troy Bilt 640 Users Manual

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2015-01-21

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Illustrated Parts Manual

Small Frame Tiller — 640 & 650 Series

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

Printed In USA

Form No. 769-03824
(January 18, 2008)

640 & 650 Series Handle & Tine Shield

23
27

31

25
34
4

28
36

29
30

22

41

4
4

33

1
48

24

A

40
26

48

38
49

3

35

32

9

20

21
2

16

7
12

11

6
39

9

A
42

24
37

10

6
5

14
7

13

7
49

47

43
45
47

39

17

46
7

19

44

2

18

8

15

640 & 650 Series Handle & Tine Shield
Ref.

Part Number

Description

Ref.

Part Number

Description

1.

686-04076

Tine Hood Assembly (A)

26.

712-0291

Hex Lock Nut, 1⁄4-20

—

686-04077

Tine Hood Assembly (B, C)

27.

732-04185

Forward Clutch Spring

2.

710-0395

Hex Screw, 5⁄16-18 x 2.25

28.

746-04208

Forward Clutch Cable Assembly

3.

710-0597

Hex Head Screw, 1⁄4-20 x 1

29.

746-04058

Rev. Clutch Cable Assembly (B, C)

4.

710-0599

Self-Tapping Screw, 1⁄4-20 x 1⁄2

30.

747-04210

Forward Clutch Bail

5.

710-0874

Hex Head Screw, 5⁄16-18 x 1-1⁄4

31.

749-04084

Upper Handlebar

6.

710-3008

Hex Head Screw, 5⁄16-18 x .75

32.

749-04208

Lower Handlebar

7.

712-04063

Nylon Hex Lock Nut, 5⁄16-18

33.

749-04106

Conduit Mount Tab

8.

712-04064

Nylon Hex Lock Nut, 1⁄4-20

34.

786-04040

Reverse Clutch Cable Bracket (B, C)

9.

715-0108

Spirol Pin

35.

786-04188

Handlebar Support

10.

732-04320

Depth Regulator Spring

36.

786-04200

Panel

710-0216

Hex Screw, 3⁄8-16 x 3⁄4

11.

736-0275

Flat Washer, 5⁄16

37.

12.

750-04149

Spacer, .462 x .328 x 1.63

38.

710-0805

Hex Screw, 5⁄16-18 x 1-1⁄2

13.

750-04160

Bushing

39.

712-3000

Hex Lock Nut, 3⁄8-16

736-0119

Lock Washer, 5⁄16

14.

750-04556

Spacer

40.

15.

786-04092

Reverse Stop Arm

41.

725-0157

Cable Tie

16.

786-04098

Channel Support Bracket

42.

736-3050

Flat Washer, 3⁄8

17.

786-04104

Drag Bar

43.

712-04065

Flange Lock Nut, 3⁄8-16

18.

786-04191

Flap Stop Bracket

44.

710-0347

Hex Hd. Screw, 3⁄8-16 x 1-3⁄4

19.

786-04290

Hood Bracket, Left Hand

45.

710-0514

Hex Hd. Screw, 3⁄8-16 x 1

20.

786-04291

Hood Bracket, Right Hand

46.

710-04048

Flange Screw, .312-18 x 1.00

21.

786-04292

Adjustable Depth Bar

47.

742-04117

Single Bolo Tine Left Hand

22.

710-0106

Hex Hd. Screw, 1⁄4-20 x 1-1⁄4

48.

742-04116

Single Bolo Tine Right Hand

23.

710-04163

Screw, #10-24 x 2

49.

686-04066

Tine Holder (A)

24.

712-3009

Hex Lock Nut, 5⁄16-18

—

686-04065

Tine Holder (B, C)

25.

712-0121

Hex Nut, #10-24

(A) — Bronco
(B) — Super Bronco
(C) — Pro Line

3

640 & 650 Series Drive System
29 23
40
45

Engine shown for reference only.

8
19
27
14
44
13

49

A

25 36
48
7

2

30

6

31

22

35 28

33

20

26

38

10

18

4

27

A

37

32

17

23

15

39

1

1

5

23

18
24
16
37

15

11

43

Bronco
2
42

9

11
6

18 38

43

41

3

4

46

21

34

42
3

12

50

30

31

35 28

33

17

25

27 15

20

36
32

22

47

37

640 & 650 Series Drive System
Ref.

Part Number

Description

Ref.

Part Number

Description

1.

736-0159

Flat Washer, 5⁄16

27.

736-0119

Lock Washer, 5⁄16 (A)

2.

756-04198

Engine Drive Pulley

28.

750-0535

Spacer, .380 ID x .625 OD x .21 (A)

3.

656-04023A

Transmission Pulley (A)

—

736-3050

Flat Washer, .406 x .812 x .051 (B, C)

—

656-04005A

Transmission Pulley (B, C)

29.

736-3090

Flat Washer, .260 x .720 x .060

4.

756-04169

Reverse Idler Pulley (B, C)

30.

736-0452

Bell Washer, .396 x 1.140 x .095

5.

786-04095

Belts/Pulleys Guard

31.

710-0459A

Hex Head Screw, 3⁄8-24 x 1.50

6.

754-04090

Forward Drive Belt

32.

736-04181

Support Washer, .690 x 1.250 x .075

7.

754-04091

Reverse Drive Belt (B, C)

33.

732-04085

Forward Return Spring

8.

731-05268

Belt Cover

34.

786-04107

Cable Mounting Bracket

9.

732-04289

Reverse Return Spring (B, C)

35.

756-04170

Forward Idler Pulley

10.

732-04081

Belt Guide (B, C)

36.

714-0105

Key, 3⁄16” x 1”

736-3078

Flat Washer, .344 x 1.00 x .063

11.

732-04079

Belt Guide

37.

12.

786-04068

Engine Bracket Left

38.

736-04193

Belleville Washer, .827 x .331 x .098

13.

786-04069

Engine Bracket Right

39.

710-0805

Hex Screw, 5⁄16-18 x 1.50 (A, B)

710-0395

Hex Screw, 5⁄16-18 x 2-1⁄4 (C)

14.

786-04070

Belt Cover Bracket

—

15.

748-04087

Shoulder Washer

40.

712-04063

Hex Lock Nut, 5⁄16-18

16.

786-04276

Reverse Idler Arm (B, C)

41.

750-0258

Shlder Spacer, .315 x .750 x .375 (A)

17.

786-04275

Forward Idler Lever

42.

736-0315

Flat Washer, .75 x 1.5 x .125 (A)

18.

710-0117

Hex Head Screw, 5⁄16-24 x 1

—

736-04192

Flat Washer, .786 x 1.000 x .031 (B, C)

19.

710-0237

Hex Head Screw, 5⁄16-24 x 5⁄8

43.

736-0242

Bell Washer, .340 x .872 x .060

20.

710-0376

Hex Head Screw, 5⁄16-18 x 1

44.

749-04193

Bumper (C)

21.

710-04049

Hex Head Screw, 5⁄16-18 x 5⁄8

45.

726-0201

Speed Nut, 5⁄16-18 (C)

22.

710-0347

Hex Head Screw, 3⁄8-16 x 1-3⁄4 (A)

46.

714-0143

Klik Pin

—

710-0520

Hex Head Screw, 3⁄8-16 x 1.50 (B, C)

47.

734-04188

Complete Wheel Ass., 10 x 2.75 (A)

23.

710-0599

Self-Tapping Screw, 1⁄4-20 x 1⁄2

48.

634-04232

Complete Whl. Ass., 13 x 5 x 6 (B, C)

24.

710-3103

Hex Head Screw, 5⁄16-18 x 2 (B, C)

49.

618-04360A

Transmission Assembly (A)

25.

712-3000

Lock Nut, 3⁄8-16

—

618-04362

Transmission Assembly (B, C)

Lock Nut, 5⁄16-18 (B, C)

50.

710-0672

Hex Head Screw, 5⁄16-24 x 1.25

26.

712-3009

(A) — Bronco
(B) — Super Bronco
(C) — Pro Line

5

640 & 650 Series Transmission Assembly
16

20

11

20

17

11

25

20

25
3

7

5

6
9

27
21

19

4
13
21

4

1

25

21

18

20

12

11

2

22

17
25

21
26

4

18

15

23

25
23
24
8
10

6

11

20

24
20

16

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.

711-04078

Tiller Shaft

7.

711-04486

Wheel Shaft

8.

711-04882

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.

736-0119

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

Woodruff Key, .25 x 1.12

* — The flat 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.

7

To order replacement parts or locate your nearest service dealer call Customer Support at (800) 828-5500.
or visit www.troybilt.com to find the nearest authorized dealer in your area.

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



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