Owner Service
27
MAN1331
(09/29/22)
TROUBLESHOOTING
BELT CONDITIONS
PROBLEM
POSSIBLE CAUSE
SOLUTION
Belt slippage
Mower overloading;
material too tall or heavy
Reduce tractor ground speed
but maintain full PTO RPM.
Cut material twice, one high pass
and then mow at desired height.
Cut 90-degrees to first pass.
Oil on belt from over lubricating
Be careful not to over-lubricate.
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 shaft for wire, rags,
or other foreign material.
Clean all material from under mower.
Frayed edges on belt cover
Belt is misaligned
Re-align belt. Be sure belt does not
rub any other part while running.
Pulley is misaligned
Inspect to ensure belt is running
in center of backside idler.
Shim idler as necessary to align.
Belt rollover
Pulley is misaligned
Re-align.
Damaged belt
Replace belt. *
Foreign object in pulley groove
Inspect all pulley grooves for rust,
paint, or weld spots and remove.
Worn pulley groove
Replace pulley.
Damaged belt
Rollover, high shock loads
or installation damaged
Replace belt. *
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 the floor. A belt that does not lie flat (has humps or twists, indicating broken
or stretched cords) must be replaced.
