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20 Owner Service
MAN0765 (12/5/2008)
BELT SERVICING
Belt Replacement
One of the major causes of belt failure is improper
installation. Before installing a new belt, check the fol-
lowing:
1. Check pulley shafts and bearings for wear.
2. Check pulley grooves for cleanliness.
3. Make sure spindles turn freely and without wobble.
If grooves require cleaning, moisten a cloth with a non-
flammable, non-toxic degreasing agent or commercial
detergent and water.
Avoid excessive force during installation. Do not use
tools to pry belt into pulley groove. Do not roll belt over
pulleys to install. This can cause hidden damage and
premature belt failure.
Belt Installation
Figure 4. Belt Routing
NOTICE
■ Use care when installing or removing belt from
spring-loaded idler. Springs store energy when
extended and, if released suddenly, can cause per-
sonal injury
1. Slide belt under drive pulley A and over idler arm.
Position belt around drive pulley A.
2. It may be necessary to remove front bolts (1) and
swing gearbox stand up to gain access to pulley A.
Route belt around pulley B, idler C, and pulley D as
shown.
3. Make sure belt is on drive pulley A and route
around idler F.
4. Grasp belt between spindle pulley E, spring-loaded
idler F and spindle pulley D. Pull spring-loaded
idler with belt to obtain enough belt length to route
it over pulley E. Make sure spring-loaded idler
pivots freely with belt installed.
BLADE SERVICING
Before servicing blades, raise and lock mower
in transport position, turn off engine, set parking
brake and remove key.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Frequently check blades. They should be sharp,
free of nicks and cracks, and securely fastened.
1. Raise mower decks to the transport position and
make sure transport locks are engaged.
2. Shut off tractor, relieve hydraulic pressure in
cylinders, set parking brake and remove key.
3. Inspect blades before each use to determine that
they are mounted securely and are in good
condition.
4. Replace any blade that is bent, excessively nicked,
worn, or has any other damage.
5. Small nicks can be ground out when sharpening.
Blade Removal
Do not handle blades with bare hands. Careless
or improper handling may result in serious injury.
1. Remove bolt (1), Figure 7, which has right hand
threads.
2. Remove washer and blade.
Blade Sharpening
NOTICE
■ When sharpening blades, be sure to balance
them. Unbalanced blades will cause excessive
vibration that can damage blade spindle bearings.
Vibration may also cause structural cracks in
mower housings.
CAUTION