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TROUBLESHOOTING GUIDE
Problem Possible Cause Possible Remedy
Leaves a streak of uncut or
partially cut grass.
1. Rotary cutter not level, side to side.
2. Blade dull or bent.
3. Blades unable to cut that part of
grass pressed by path of tractor
4. Possible build up of material under
rotary cutter.
Level 3-pt. hitch linkage on tractor.
Sharpen or replace blades.
Slow ground speed of tractor but
keep engine running at full PTO
rpm. Cutting lower will help.
Clean rotary cutter.
Blade cuts grass lower in
center of swath than at the
edge.
1. Height of rotary cutter lower at rear or at
front.
Adjust rotary cutter height and
altitude so that rotary cutter rear &
front are with 1/2” of same height.
Material discharges from
cutter unevenly, or dis-
charges clumps of grass.
1. Grass or brush may be too high or thick.
2. Grass wet.
Reduce ground speed but maintain
540 rpm at tractor PTO, or make
two passes over material. Raise rotary
cutter for the fi rst pass and lower for the
second pass, preferably cutting 90°
to the fi rst pass. Raise rear of rotary
cutter high enough to permit
material to discharge.
Allow grass to dry before mowing.
Slow ground speed of tractor but
keep engine running at full PTO rpm.
Cutting lower will help.
Gearbox overheating. 1. Low on lubricant.
2. Improper lubricant type.
3. Excessive trash build up around
gearbox.
Fill to proper level.
Replace with proper lubricant.
Remove trash.
Rotary cutter will not cut.
Rotary cutter will not cut all
the time. (slip clutch only)
1. Shear bolt sheared
2. Slip clutch slipping.
Install new shear bolt.
Adjust slip clutch according to
guidelines on page 22.
Excessive vibration. 1. Possible build up of material on blade
2. Blades locked into position.
3. Check for even wear on each blade tip.
4. Broken blade.
5. New blade or bolts not matched with
worn blade or bolts.
Clean blade pan.
Free blades so they swing free.
Weigh each blade. Weight should be
with in 1 oz. Always replace both blades.
Replace blades, in set.
Replace blades or bolts in sets.
Gearbox noisy. 1. Low oil in gearbox. Check oil level. Add oil.
Troubleshooting Guide 35