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11
Trouble Shooting
Fault
Cause
Remedy
Leaves a streak of uncut or
partially cut grass
Blades dull or bent
Replace blades
Carrier RPM too low
Use correct PTO speed
Field conditions are so wet that the tractor tyre is pushing
grass into mud
Too wet to mow. Stop operation and wait until it 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 too much material
Reduce ground speed but maintain 540rpm 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
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 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 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
Noisy machine
Worn bearing
Replace bearings
Low oil in gearbox
Check level and add oil
Loose Parts
Check all bolts are fully tightened
Wrong PTO rpm rate
Check PTO rate & adjust as necessary
Rotors bent / broken
Replace bent or missing blades
Bent PTO shaft
Check PTO shafts are aligned correctly
Check output shaft on gearboxs are not bent
Check driveline between gearboxes is aligned.
Gearbox leaking
Damaged oil seal
Replace seal
Bent shaft
Replace oil seal and shaft
Shaft rough in oil seal area
Replace or repair shaft
Oil seal installed incorrectly
Replace seal
Oil seal not sealing in the housing
Replace seal or use a sealant on outside diameter
of seal
Oil level too high
Drain oil to proper level
Hole in gearbox
Replace the gearbox
Gasket damaged
Replace gasket
Bolts loose
Tighten bolts
