MODELS 643B, 643C, 643D & 645A

REF

PART NO.

DESCRIPTION

NO.

 

 

 

 

 

1

736-0159

Flat Washer, 5/16

2

756-04198

Pulley, Engine Drive

3

656-04023

Transmission Pulley (A)

 

656-04005

Transmission Pulley (B) (C)

4

756-04169

Pulley, Reverse Idler (B) (C)

5

786-04095

Guard, Belts/Pulleys

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

Bracket, Belt Cover

15

748-04087

Shoulder Washer

16

786-04276

Reverse Idler Arm (B) (C)

17

786-04275

Forward Idler Lever

18

710-0672

Hex Hd. Screw, 5/16-24 x 1.25 (A)

 

710-0117

Hex Hd. Screw, 5/16-24 x 1 (B) (C)

19

710-0237

Hex Hd. Screw, 5/16-24 x 58

20

710-0376

Hex Hd. Screw, 5/16-18 x 1

21

710-04049

Hex Hd. Screw, 5/16-18 x 5/8

22

710-0347

Hex Hd. Screw, 3/8-16 x 1-3/4 (A)

 

710-0520

Hex Hd. Screw, 3/8-16 x 1.50 (B) (C)

23

710-0599

Screw, Self-Tapping, 1/4-20 x 1/2

24

710-3103

Hex Hd. Screw, 5/16-18 x 2 (B) (C)

25

712-3000

Lock Nut, 3/8-16

26

712-3009

Lock Nut, 5/16-18 (B) (C)

27

736-0119

Lock Washer, 5/16 (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

 

 

 

REF

PART NO.

DESCRIPTION

NO.

 

 

 

 

 

30

736-0452

Bell Washer

31

710-0459A

Hex Hd. Screw, 3/8-24 x 1.50, GR5

32

736-04181

Support Washer

33

732-04085

Forward Return Spring

34

786-04107

Bracket, Cable Mounting

35

756-04170

Forward Idler Pulley

36

714-0105

Key, 3/16" x 1"

37

736-3078

Flat Washer

38

736-04193

Belleville Washer

39

710-0805

Hex Screw, 5/16-18 x 1.50 Gr5 (A) (B)

 

710-0395

Hex Screw, 5/16-18 x 2-1/4, Gr5 (C)

40

712-04063

Nut, Hex Lock, 5/16-18

41

750-0258

Spacer, Shoulder (A)

42

736-0315

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

 

736-04192

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

43

736-0242

Bell Washer

44

749-04193

Bumper (C)

45

726-0201

Nut, Speed, 5/16-18 (C)

46

714-0143

Klik Pin

47

734-04188

Complete Wheel Assembly 10 x 2.75 (A)

48

634-43203

Complete Wheel Assembly 12 x 4 x 6 LH (B1)

 

634-43204

Complete Wheel Assembly 12 x 4 x 6 LH (B1)

 

734-04164

Tire LH 12.0 x 4.10 x 6.00 (B1)

 

634-04200

Rim Assembly (B1)

 

734-0255

Air Valve (B1) (C)

 

734-04161

Complete Wheel Assembly 10 x 2.75 RH (B2)

 

734-04162

Complete Wheel Assembly 10 x 2.75 LH (B2)

 

634-04232

Complete Wheel Assembly 13 x 5 x 6 (C)

 

634-04218

Rim Assembly (C)

 

734-04163

Tire (C)

49

714-04048

Cotter Pin

50

711-04126

Clevis Pin

 

 

 

(A)For Model 643C (B1) For Model 643B

(B2) For Model 643D

(C)For Model 645A

29

Page 29
Image 29
Troy-Bilt 643B Super Bronco manual 634-43203

643B Super Bronco specifications

The Troy-Bilt 643B Super Bronco represents a robust and versatile addition to the world of outdoor power equipment, designed with the needs of gardeners and landscapers in mind. This rear-tine tiller is a notable choice for those looking to cultivate their gardens efficiently and effectively.

One of the standout features of the Troy-Bilt 643B is its powerful 306cc OHV engine, which provides ample torque and ensures that the tiller can tackle tough soil conditions with ease. This engine is specifically designed for superior performance and reliability, allowing users to till effectively in a variety of soil types, from sandy loam to clay.

The tiller boasts a 12-inch tilling width and a tilling depth of up to 8 inches, making it ideal for preparing garden beds and landscaping areas. The adjustable tilling depth allows gardeners to customize their cultivation process, enabling them to penetrate deeper for planting larger crops or more shallow for seedbed preparation.

Equipped with a rear-tine design, the Super Bronco brings several advantages. The rear-tine configuration provides better control and stability while working, making it easier to maneuver in tight spaces. Furthermore, the counter-rotating tines help to break up compact soil while reducing the chances of soil clumping, resulting in a finer tilled surface.

Another remarkable feature is the Troy-Bilt patented "Smart Till" technology, which allows users to select the most suitable tilling method for their specific soil conditions. This innovative technology enhances efficiency, saves time, and ensures that the tiller delivers optimal results with every pass.

For ease of use, the tiller is equipped with large, easy-grip controls and a comfortable handlebar design that reduces fatigue during extended use. Additionally, the rugged construction and all-terrain tires enable the Troy-Bilt 643B to navigate challenging landscapes without issue.

The maintenance of the Super Bronco is user-friendly, with features that facilitate easy access to essential components for tune-ups and repairs. Overall, the Troy-Bilt 643B Super Bronco combines power, technology, and practicality, making it an excellent choice for both novice and experienced gardeners seeking to enhance their outdoor projects.