
25
PN 55191 (4/22/99)
TROUBLE SHOOTING
BELT CONDITIONS
PROBLEM
POSSIBLE CAUSE
SOLUTION
Belt slippage
Mower overloading; material too
Reduce tractor ground speed but
tall or heavy
maintain full PTO rpm. Cut material
twice, one high pass and then mow
at desired height. Cut a partial
swath.
Oil on belt from overlubrication
Be careful not to overlubricate.
Clean lubricant from belt and pulleys
with clean rag. Replace oil-soaked
belt.
Belt hung up or rubbing
Check belt position in pulleys and
idlers. Check belt for free travel in
pulleys. Check under mower and
around blade spindle shafts for wire,
rags, or other foreign material.
Clean all material from under
mower.
Frayed edges on belt
Belt misaligned
Re-align belt. Be sure belt does not
cover
rub any other part while running.
Pulley misalignment
Inspect to ensure belt is running in
center of backside idler. Shim idler
as necessary to align.
Belt rollover
Pulley misalignment
Re-align.
Damaged belt
Replace belt.*
Foreign object in pulley grooves
Inspect all pulley grooves for rust,
paint or weld spots and remove.
Worn pulley groove
Replace pulley.
Damaged belt
Rollover, high shock loads or
Replace belt.*
installation damage
Belt breakage
High shock loads
Avoid abusive mowing. Avoid hitting
the ground or large obstructions.
Belt came off drive
Check pulleys for foreign material in
grooves. Avoid hitting solid objects
or ground.
* Check belt for damage by laying it flat on floor. If belt does not lie flat (has humps or twists), which indicates broken
or stretched cords, it must be replaced.