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Yard-Man 604G Operator's Manual page 22

Auto drive lawn tractors

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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.
Neutral
Return
Bracket
Idler
Adj. Rod
Place Wrenches
Here
Hairpin
lips
AutoDrive '_ Pedal
Return Spring
Speed Control
Assembly
Figure 17
Chas
the Beck Belt
_
ARNING"
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.
Model604G
Engine Pulley
PTO Idler Bracket
(mounted on tractor)
Left Hand Pulley
Right Hand Pulley
(beneath belt guard)
J
Deck Idler Pulley
Oeck Be,t IBottoml
[]PTO
Belt (Top)
Center Pulley
Figure 18
Self-Tapping
Screws
22

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604h