MTD 604H manual Model 604G, Changing the Deck Belts

After replacing the drive belts, adjust the drive pedal on your tractor as follows:

1.Locate the speed control assembly on the underside of the steering support bracket. See Figure 17.

2.Remove both hairpin clips from the pin which is fastened to the speed control assembly (be careful not to lose the small flat washers found on the pin). See Figure 17.

3.Remove the drive pedal return spring.

4.Using two 9/16" wrenches, remove the pin from the speed control assembly. See Figure 17.

5.Thread the idler adjustment rod inward or outward to lengthen or shorten the travel of the double-idler bracket until proper adjustment is achieved.

6.Reassemble by following the above steps in reverse order.

Idler	Place Wrenches Here
Adj. Rod

Neutral

Return

Bracket

Pin

Hairpin

Clips

AutoDrive™ Pedal	Speed Control
Return Spring	Assembly

Figure 17

Changing the Deck Belt(s)

WARNING: Shut tractor engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine before proceeding with job.

IMPORTANT: The V-belts on your tractor are specially designed to engage and disengage safely. A substitute (non- OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine, use factory approved belts.

•All belts on the tractor are subject to wear and should be replaced if cracking, shredding or rotting occurs. To change or replace the deck belts on your tractor, proceed as follows:

1.Lower the deck by moving the deck lift lever to the lowest position.

2.Take the belt guards off by removing the self-tapping screws that fasten them to the deck surface. See Figure 18 & Figure 19 (as the case may be) for location of the screws.

3.Grasp the PTO idler bracket and pivot it toward the discharge chute to relieve tension on the PTO belt.

Model 604G

Engine Pulley	PTO Idler Bracket
Left Hand Pulley	(mounted on tractor)

Deck Idler Pulley

Center Pulley

Deck Belt (Bottom)

Right Hand Pulley (beneath belt guard)

Self-Tapping Screws

PTO Belt (Top) Figure 18

22