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20
Troubleshooting
Fault
Cause
Remedy
Machine is getting blocked
Material too high or too much material
Reduce the ground speed but maintain required
rpm from the PTO input
Reduce the ground speed but maintain required oil
flow rate (hydraulic driven machines)
Grass is too wet
Stop and wait until grass is dried
Worn or dull blades
Sharpen or replace blades
Leaves a streak of uncut or
partially cut grass
Blades dull or bent
Sharpen or replace blades
Carrier RPM too low
Use correct PTO speed
Oil flow rate is too low (hydraulic driven machines)
Increase the oil flow rate but do not exceed the
maximum rate permitted
Field conditions are so wet that the tractor tyre is pushing
grass into mud
Too wet to mow. Stop operation and wait until grass
is drier
Ground speed too fast
Reduce ground speed by shifting to a lower gear
Possible build-up materials under mower
Clean mower
Blades mounted incorrectly (cutting edge against direction
rotation)
Change blades so that cutting edge is facing correct
rotation.
Material discharges from
mower unevenly; bunches
of material along with swath
Material too high and/or too much material
Reduce ground speed but maintain the
recommended RPM at tractor PTO or make two
passes over material. Raise mower for the first
pass and lower to desired height for the second and
cut a 90 degree angle to first pass
Reduce ground speed but maintain the
recommended oil flow rate or make two passes
over material. Raise mower for the first pass and
lower to desired height for the second and cut a
90 degree angle to first pass (for hydraulic driven
machines
Gearbox overheating
Low on lubricant
Fill to proper level
Improper type lubricant
Replace with proper lubricant
Excessive grass / debris build-up around gearbox
Remove grass, etc from machine
Blade/bullets is scalping
ground
Mower too low
Raise mower-reset wheels
Field is ridged
Cut field at a different angle
Field is too wet
Stop and wait until it is dried
Mower will not cut.
Shear bolt sheared
Install new shear bolt
Blades/bullets wear too fast
Cutting in sandy conditions
Increase cutting height
Cutting in rocky conditions
Increase cutting height
Blades hitting ground
Increase cutting height
Mower seems to require
excessive power
Advancing into grass too rapidly
Reduce forward travel speed
Hitting ground
Raise mower and reset wheels
Worn or dull blades
Sharpen or replace blades
Tractor not large enough
Use larger horsepower tractor
Excessive vibration
Check gearbox bolts
Tighten if loose
Check for loose nuts on blades
Tighten if loose
Blade broken
Replace blades, in set
New blade or bolts matched with worn blade or bolts
Replace blades or bolts in sets
Drivelines not phased correctly. Implement and tractor yokes
must be in line
Phase the driveline. Replace if necessary
