PROBLEM
Grass cut higher in center of swath than at
edge
Grass cut lower in center of swath than at
edge
Streaking conditions in swath
Material discharges from mower unevenly;
bunches of material along swath
PROBLEM
Belt slippage
Frayed edges on belt cover
Belt rollover
Damaged belt
Belt breakage
* 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.
MAN1260 (4/09/2018)
TROUBLE SHOOTING
MOWING CONDITIONS
POSSIBLE CAUSE
Height of mower higher at front than at rear
Loose blade
Height of mower lower at front than at rear
Loose blade
Conditions too wet for mowing
Blades unable to cut that part of grass pressed
down by path of tractor tires
Dull blades
Loose blade
Material too high and too much material
Grass wet
BELT CONDITIONS
POSSIBLE CAUSE
Mower overloading; Material too tall or heavy
Oil on belt from over lubrication
Belt hung up or rubbing
Belt misaligned
Pulley misaligned
Pulley misaligned
Damaged belt
Foreign object in pulley groove
Worn pulley groove
Rollover, high shock loads or installation
damaged
High shock loads
Belt came off drive
Adjust mower height and attitude so that mower rear
and front are within 12.7 mm (1/2") of same height.
See instructions on page 9.
Check blade hardware.
Adjust mower height and attitude so that mower rear
and front are within 12.7 mm (1/2") of same height.
See instructions on page 9.
Check blade hardware
Allow grass to dry before mowing.
Slow ground speed of tractor but keep engine running
at full PTO rpm. Cutting lower will help. Adjust tractor
tire spacing if possible.
Sharpen or replace blades.
Check blade hardware.
Reduce ground speed but maintain 540 rpm at tractor
PTO, or make two passes over material. Raise mower
for the first pass and lower for the second and cut at
90 degrees to first pass. Raise rear of mower high
enough to permit material to discharge, but not so high
that conditions listed above occur.
Allow grass to dry before mowing. Slow ground speed
of tractor but keep engine running at full PTO rpm.
Reduce tractor ground speed but maintain full PTO
rpm. Cut material twice, one high pass and then mow
at desired height. Cut at 90 degrees to first pass.
Be careful not to over lubricate. Clean lubricant from
belt and pulleys with clean rag. Replace oil-soaked
belt.
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.
Re-align belt. Be sure belt does not rub any other part
while running.
Inspect to ensure belt is running in center of backside
idler. Shim idler as necessary to align.
Re-align pulley.
Replace belt.*
Inspect all pulley grooves for rust, paint, or weld spots
and remove.
Replace pulley.
Replace belt.*
Avoid abusive mowing. Avoid hitting the ground or
large obstructions.
Check pulleys for foreign material in grooves. Avoid
hitting solid objects or ground.
Troubleshooting 15
SOLUTION
SOLUTION