Troubleshooting
27
MAN1168 (5/27/2016)
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
Does not cut
Dull blades
Sharpen blades.
Worn or broken blades
Replace blades. (Replace in pairs
only.)
Incorrect PTO speed
Set at rated PTO speed.
Ground speed too fast
Reduce ground speed.
Drive not functioning (blades do
not turn when PTO is running)
Check drive shaft connection.
Check gearbox.
Gearbox malfunction
Repair gearbox.
Excessive clutch slippage
Adjust clutch.
Incorrect blade direction
Check to be sure blade edge is
correct for direction of rotation.
Streaks or ragged cut
Broken or worn blades
Replace or sharpen blades.
Attitude incorrect
Level machine.
Ground speed too fast
Reduce ground speed.
Excessive cutting height
Lower cutting height. (Note: Set
height so blades do not frequently
hit ground.)
Excessive lush and tall vegetation
Recut at 90° to first pass.
Excessive side skid wear
Running with skids continuously
on ground
Raise cutting height or adjust.
Excessive clutch slippage
Clutch out of adjustment
Adjust clutch.
Clutch discs worn; wear stops
contacting opposite plate
Replace discs.
Blades hitting ground
Raise cutting height.
Vibration
Broken blade
Replace blades in pairs.
Bearing failure
Check gearbox shafts for side
play.
Hitch length incorrect
Reset hitch length.
Universal drive
Adjust pedestal bearing height to
be parallel to ground.
Flexible coupler is binding
Lubricate grease fitting on spline
yoke.
Blades hitting deck
Bent blades or crossbar
Replace bent blades or crossbar.
Blades hitting each other
Side drive failure
Retime blades, or replace rubber
coupler disks. See page 36.
Unit will not raise
Low oil
Add hydraulic oil.
