MODELS 640C & 644A

1 2

3

4

2 5

REF

PART NO.

DESCRIPTION

NO.

 

 

 

 

 

1

GW-9517

Snap Ring

2

GW-1714

Bearing, Tapered Roller (with race)

3

GW-50043

Support Washer, Rear

4

711-04110

Drive Shaft

5GW-1224-1* Shim, Rear Bearing Cap, .010" thick

GW-1224-2* Shim, same as above, except .030" thick

GW-1224-3* Shim, same as above, except .005" thick

 

GW-1224-4*

Shim, same as above, except .062" thick

GW-1325C

Shim Set (Incl. the following shims:

 

 

two #1224-1, two 1224-2 & one #1224-4)

* Use as required to obtain between .005” and .015” allowable end-play.

1

 

 

 

2

 

 

 

 

REF

 

PART NO.

DESCRIPTION

 

 

 

 

 

 

 

 

NO.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

2

 

 

 

1

 

GW-9727

Plug, Transmission Oil Fill

 

 

 

 

 

 

 

2

 

710-04049

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

 

 

 

 

 

 

 

 

 

7

 

6

 

 

 

 

3

 

736-0119

Lock Washer, 5/16

 

 

 

 

 

4

 

1918377

Rear Cover, Transmission

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

5

 

1916641

Front Cover, Transmission

 

 

 

 

 

 

 

 

6

 

GW-50032

Gasket, Housing Cover

 

 

 

 

 

 

 

 

7

 

721-04030

Oil Seal, Drive Shaft

 

 

 

 

6

 

 

 

8

 

721-04031

Oil Seal, Wheel Shaft

 

 

 

8

 

 

 

 

9

 

619-04013

Transmission Housing Assembly

 

 

 

 

 

 

 

 

10

 

721-04036

Oil Seal, Tine Shaft

 

 

 

 

 

 

 

 

11

 

736-3008*

Washer, Flat, .344 x .750 x .120

 

 

 

 

 

 

 

 

12

 

718-04008

Rear Bearing Cap

 

 

8

9

 

11*

 

13

 

710-04048

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

 

 

 

 

10

 

 

14

 

710-3008

Hex Hd. Flange Screw, 5/16-18 x 3/4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

*Included with transmission when purchased as an assembly only.

 

 

 

 

 

 

13

 

Remove and discard when installing the transmission on tiller.

 

 

 

10

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

26

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Image 26
Troy-Bilt 640C - Tuffy CRT, 644A - Super Bronco CRT, 640C-Tuffy CRT manual GW-1325C Shim Set Incl. the following shims

640C - Tuffy CRT, 644A - Super Bronco CRT, 640C-Tuffy CRT, 640C-Tuffy specifications

The Troy-Bilt 640C-Tuffy and the 644A-Super Bronco CRT are exemplary models in the realm of cultivators and tillers, merging robust performance with user-friendly features. These machines are designed to make garden preparation easier and more efficient, catering to both amateur gardeners and seasoned horticulturists alike.

The Troy-Bilt 640C-Tuffy boasts a powerful engine and features a rear-tine design, enabling the user to tackle tough soil with ease. One of its main features is the Carbide Tines that effectively break up hard ground and aerate the soil, promoting healthy growth. The 640C-Tuffy is sturdy, with durable construction that ensures longevity and resilience against tough garden conditions. It also includes a 10-inch tilling width, allowing it to cover substantial ground in shorter periods. Moreover, the model is equipped with adjustable tilling depth settings, accommodating various types of gardening tasks from breaking new ground to preparing existing beds.

On the other hand, the 644A-Super Bronco CRT highlights innovative technology that makes tilling a breeze. This model features counter-rotating tines which effectively mix compost and soil, offering improved mixing and aeration. The 644A is known for its robust performance, powered by a reliable engine, which delivers consistent torque even on challenging soil types. Additionally, its 18-inch tilling width allows for broader coverage, resulting in efficient garden preparation.

Both models are equipped with ergonomic handlebars designed for operator comfort. These handlebars are adjustable, allowing users of different heights to find a comfortable grip, thus reducing fatigue during extended use. The 640C-Tuffy and 644A-Super Bronco CRT are designed with ease of operation in mind, featuring intuitive controls and a lightweight design that makes maneuvering effortless.

In terms of maintenance, both models boast easily accessible components which allow for simple servicing and routine upkeep, ensuring long-lasting performance. Additionally, these cultivators are built with safety features, including protective shields that guard against debris.

In summary, the Troy-Bilt 640C-Tuffy and 644A-Super Bronco CRT shine in their ability to combine cutting-edge technology, user-friendly operation, and robust design, making them ideal choices for anyone looking to enhance their gardening experience. Whether preparing a new garden bed or maintaining an existing one, these cultivators are engineered to deliver exceptional results with ease and confidence.