Single-speed Transmission

REF.

PART

 

NO.

NO.

DESCRIPTION

1

618-0318

Clutch Collar†

2

710-0788

Self-tapping Screw, 1/4-20 x 1.0

3

711-1274

Drive Shaft

4

711-1280

Counter Shaft

5713-0474 22-link Chain, #420

6713-0478 14-tooth Sprocket

7717-1422 Sprocket Bevel Gear, 42/10

8717-1565 29-tooth Spur Gear

9717-1569 20-tooth Spur Gear

10718-0652 Counter Shaft Coupling

11719-0394 Lower Housing

12a

736-0336

Flat Washer, 5/8 x 1.0 x .030*

12b

736-0337

Flat Washer, 5/8 x 1.0 x .040*

12c

736-0349

Flat Washer, 5/8 x 1.0 x .020*

13736-0519 Flat Washer, .70 x 1.125 x .031

14741-0336 Flange Bearing, 5/8 x 3/4 x 3/4

15741-0337 Flange Bearing, 5/8 x 3/4 x 15/16

16750-1238 Spacer, .635 x 1.0 x .27

17611-0112 Detent Shaft Assembly†

611-0133 Detent Shaft Assembly‡

18618-0369 Differential Assembly†

618-0424 Differential Assembly‡

19661-0006 Brake Assembly

20710-1325 Self-tapping Screw, 1/4-20 x 1.625

21710-1206 Self-tapping Screw, 1/4-20 x 2.375

22

717-0678

Brake Pad

23

732-0863

Compression Spring

24

741-0862

Detent Ball

25

761-0202

Brake Disc

26

711-1331

Input Shaft†

 

711-1430

Input Shaft‡

27716-0385 Retaining Ring, .394†

716-0108 Retaining Ring, .437‡

28717-1571 12-tooth Bevel Pinion†

717-1464 14-tooth Bevel Pinion‡

29719-0391A Upper Housing

30736-0335 Thrust Washer, .63 x 1.24 x .062†

736-0723 Thrust Washer, .635 x 1.25 x .042‡

31741-0525 Needle Bearing, .625 x .875

32

718-0228

Clutch Collar‡

33

711-1431

Drive Shaft‡

34750-1234 Spacer, .633 x 1.0 x .513

35717-1362 42-tooth Bevel Gear‡

36717-1363 42-tooth Bevel Gear‡

37736-0495 Thrust Washer, 1.0 x .632 x .0

38741-0340 Sleeve Bearing, .75 x .1.0 x 1.0

39721-0338 Seal, .75 x 1.0 x .125

40 716-0231

E-ring, .75

*If rebuilding transmission for any reason, use applicable flat washer (12a, 12b, or 12c) in this application allowing proper end play as instructed in MTD ’s Service Manual.

IMPORTANT: One of two different transmissions may be found on your lawn tractor (618-0307B & 618-0307C). Refer to the model plate found on the rear right portion of the transmission’s lower housing before ordering replacement service parts.

†Used on Single-speed transmission 618-0307B ONLY.

‡Used on Single-speed transmission 618-0307C ONLY.

35

Page 35
Image 35
Yard-Man 604 manual Single-speed Transmission

604 specifications

The Yard-Man 604 represents an evolution in outdoor power equipment, merging robust design with advanced technology to meet the demands of both residential and professional users. Renowned for its reliability, this machine is built to tackle various lawn care challenges, ensuring a well-manicured outdoor space with minimal effort.

One of the standout features of the Yard-Man 604 is its powerful engine, which offers excellent performance and fuel efficiency. The engine is designed to provide ample torque, enabling it to handle thick grass and uneven terrain with ease. Coupled with a reliable starting system, users can depend on the machine to fire up promptly every time, whether during a warm summer afternoon or a damp spring morning.

The cutting deck of the Yard-Man 604 is another highlight, designed for versatility and precision. With adjustable cutting heights, users can easily customize the lawn’s finish, whether they prefer a close trim or a slightly longer grass length for a lush appearance. The deck's robust construction ensures durability, while the design minimizes clippings left behind, reducing the need for additional cleanup.

In terms of technology, the Yard-Man 604 incorporates advanced features such as a self-propulsion system that adjusts to the user's walking speed, providing an effortless mowing experience. This not only enhances comfort but also improves maneuverability, making it easier to navigate around obstacles like trees and flower beds.

Safety is a key consideration in the design of the Yard-Man 604. It is equipped with a reliable safety switch that prevents accidental start-ups, along with sturdy handles that provide a secure grip during operation. These features, combined with a lightweight structure, make the mower accessible to a wide range of users.

Additionally, maintenance is straightforward with the Yard-Man 604. Its engine design allows for easy access to key components, making routine checks and servicing simple, which ultimately extends the lifespan of the equipment.

Overall, the Yard-Man 604 is characterized by its blend of power, efficiency, and user-friendly features, making it an ideal choice for anyone looking to keep their lawn in pristine condition with minimal hassle. Its thoughtful design caters to both casual homeowners and more demanding landscaping professionals, ensuring that it meets a variety of outdoor maintenance needs.