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Problem
Possible Cause
Possible Remedy
Leaves a streak of uncut
1. Rotary cutter not level, side to side.
Level 3-pt hitch linkage on tractor.
or partially cut grass.
2. Blade dull or bent.
Sharpen or replace blades.
3. Blades unable to cut that part of
Slow ground speed of tractor but
Slow ground speed of tractor but Slow ground speed of tractor but
grass pressed by path of tractor tires.
keep engine running at full PTO
rpm. Cutting lower will help.
4. Possible build up of material under
rotary cutter.
Clean rotary cutter.
Blade cuts grass lower
1. Height of rotary cutter lower at rear
Adjust rotary cutter height and
in center of swath
or at front.
altitude so that rotary cutter rear &
than at the edge.
front are with 1/2” of same height.
Material discharges from
1.
Grass or brush may be too high or thick.
Reduce ground speed but maintain
cutter unevenly, or discharges
cutter unevenly, or discharges
cutter unevenly, or discharges
540 rpm at tractor PTO, or make
clumps of grass.
two passes over material. Raise rotary
cutter for the rst pass and lower for
the
second pass, preferably cutting 90
0
to the rst pass. Raise rear of rotary
cutter high enough to permit
material to discharge.
2. Grass wet.
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.
Fill to proper level.
2. Improper lubricant type.
Replace with proper lubricant.
3. Excessive trash build up around
Remove trash.
gearbox.
Rotary cutter will not cut.
1. Shear bolt sheared
Install new shear bolt.
Rotary cutter will not cut
2. Slip clutch slipping.
Adjust slip clutch according to
all the time. (slip clutch only)
guidelines on page 22.
Excessive vibration.
1. Possible build up of material on blade
Clean blade pan.
2. Blades locked into position.
Free blades so they swing free.
3. Check for even wear on each blade tip.
Weigh each blade. Weight should be
with in 1 oz. Always replace both blades.
4. Broken blade.
Replace blades, in set.
5. New blade or bolts not matched with worn
Replace blades or bolts in sets.
blade or bolts.
Gearbox noisy.
1. Low oil in gearbox.
Check oil level. Add oil.
Troubleshooting Guide 33
TROUBLESHOOTING GUIDE