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21
Changing the Transmission Drive Belt
All belts on your tractor are subject to wear and should
be replaced if any signs of damage are observed.
NOTE:
It is recommended that both drive belts be
replaced at the same time.
IMPORTANT:
The V-belts found 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.
To change or replace the drive belt on your tractor,
proceed as follows:
•
Remove the cutting deck as instructed earlier.
•
After disconnecting the battery cables, remove the
battery and battery tray from beneath the seat.
IMPORTANT:
When removing the battery, disconnect
the
negative
(black) wire from its terminal first, followed
by the
positive
(red) wire. Re-install in reverse order.
Upper Drive Belt
•
Locate the transmission idler pulley on the upper
drive belt by looking through the battery tray
opening. See Figure 17.
•
Grasp the bracket and pivot the transmission idler
pulley toward the rear of the tractor to release
tension on the upper drive belt.
•
Remove the belt from around the transmission idler
pulley.
•
Remove the upper drive belt from around the
transmission pulley and the variable-speed pulley.
NOTE:
Slowly rotate the pulley counter-clockwise to roll
the belt off it.
•
Remove the upper drive belt by pulling it up through
the battery tray opening.
•
Reroute the new upper drive belt as shown in
Figure 17.
Lower Drive Belt
NOTE:
Proper removal of the lower drive belt requires
the removal of several tractor components. Read
through the following procedure prior to attempting it;
determine if you can successfully complete it.
Otherwise, see an authorized Troy-Bilt Service Dealer
for the job.
Figure 17
WARNING:
Be sure to shut the engine off,
remove ignition key, disconnect the spark plug
wire(s) and ground against the engine to
prevent unintended starting before removing
the belt(s).
Drive belt (Lower)
Drive belt (Upper)
Electric PTO Clutch
Front of Tractor
Rear Idler Pulley
Front Idler Pulley
Variable-Speed
Transmission Idler Pulley
Pulley
Two-speed
Belt Keeper
Shift Lever
Transmission
Transmission Pulley
Belt Keeper
Idler Bracket
Double Idler Bracket
Battery Tray
Opening
NOTE:
View shown from above tractor.
Engine Pulley
Keeper Pins