7 TROUBLESHOOTING
PROBLEM
CHECK
SOLUTION
Cutting wheel does not spin.
Cutting wheel jammed.
Remove material from cutting
wheel.
Shear bolt sheared off.
Replace shear bolt.
NOTICE - Prevent equipment
damage.
Shear bolt is designed to fail to
protect drive components from
damage.
Replace shear bolt with an M10
x 55mm grade 10.9 as specified
by the driveshaft manufacturer.
Shear bolt repeatedly fails.
Tractor HP
Tractor too large for stump
grinder.
NOTICE - Prevent equipment
damage.
Shear bolt is designed to fail to
protect drive components from
damage.
Replace shear bolt with an M10
x 55mm grade 10.9 as specified
by the driveshaft manufacturer.
Cutting wheel does not have much
power.
Tractor too small.
Verify tractor is properly sized for
grinder.
Tractor is not able to lift 3-point.
Tractor is too small.
Move link pins to the top position
on the stump grinder to add lever-
age.
Cutting wheel cannot be lifted high
enough.
Stump too tall.
Cut stump shorter.
Shorten top link on 3-point hitch.
Cutting wheel cannot be lowered
far enough.
Top link not correct length.
Lengthen top link on 3-point hitch.
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