Troy-Bilt 772C0748 Manuel D’Utilisation

26

•

Remove the upper drive belt by pulling it up through
the battery tray opening.

•

Reroute the new upper drive belt as shown in Figure
22.

 

Proper removal of the lower drive belt

requires the removal of several tractor components.
Read through the following procedure prior to attempting
it to determine if you feel you could successfully
complete it. If you don’t, see an authorized service
dealer to have the belt changed.

 Note the routing of the lower drive belt 

around both the pulleys and the belt keepers BEFORE 
performing the following steps.

•

Locate the variable-speed pulley through the battery 
tray opening. See Figure 22.

•

Remove the variable-speed pulley by loosening the 
hex bolt that secures it to the transmission. Use a 
second wrench to hold the hex nut on the bottom 
side of the pulley.

•

Slide the belt off the variable-speed pulley as you lift 
the pulley up and out through the battery tray 
opening. 

•

Remove rear idler pulley from the double- idler 
bracket while loosening the belt from around both 
the rear and the front idler pulleys. See Figure 22.

•

Remove the hex bolt from the center of the engine 
pulley or the electric PTO clutch and gently lower it 
off the engine crankshaft. Be careful not to lose any 
washers or which may be found on top of the PTO 
clutch.

  When remounting the PTO clutch, 

torque the center hex bolt to between 38 foot-pounds 
and 50 foot-pounds.

•

Remove the drive belt by feeding it from both ends 
toward the front idler pulley on the double-idler 
bracket. See Figure 24.

•

Reassemble by following the above steps in reverse 
order. 

•

Reroute the new belt around the pulleys, belt 
keepers and keeper pins exactly as the old one was 
routed. Refer to Figure 22.

The drive pedal is properly adjusted when the hole found 

in the double-idler bracket has approximately 
1-3/8" of travel with ten pounds of pressure applied to 
the drive pedal. See Figure 23.

Adjust the drive pedal after replacing the drive belts on 
your tractor, if necessary, as follows:

•

Locate the speed control assembly on the underside 
of the steering support bracket. See Figure 24.

•

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 24.

•

Remove the drive pedal return spring.

•

Using two 9/16" wrenches, remove the pin from the 
speed control assembly. See Figure 24.

•

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

•

Reassemble by following the above steps in reverse 
order. 

Never store the machine or fuel

container indoors where there is an open
flame, spark or pilot light such as on water
heater, furnace, clothes dryer or other gas
appliance.

Use a fuel stabilizer additive or

drain the fuel into an approved container
outdoors, away from an open flame. Allow
engine to cool. Extinguish cigarettes, cigars,
pipes and other sources of ignition prior to
draining fuel. 

View shown from above tractor.