REPLACING TEETH
GREASING
MAINTENANCE
MAINTENANCE
Proper routine maintenance is critical to operator safety,
achieving proper stump grinding results, and prolonging
the life of the machine.
Before cleaning and/or any maintenance is performed on
the stump grinder, always turn off the tractor engine and
disconnect the PTO shaft.
Inspect the machine before each use for loose nuts and
worn cutting teeth and clean any debris that has built-up.
After 2 hours of operation, check for loose nuts and worn
cutting teeth. Tighten and replace as necessary.
Grease the bearings and the pivot pins on the main hous-
ing as needed before each use Do not over-grease the
bearings as this can blow out the seals and cause prema-
ture bearing failure. Refer to section, GREASING, for
information.
Inspect the clutch plates on the PTO shaft periodically to
ensure that they are not seized together. Refer to PTO
SHAFT CLUTCH RUN-IN in the SET UP PROCEDURES
section of the manual.
Disconnect the PTO shaft from the tractor and set the
stump grinder on a flat, level surface.
Remove the M16 X 1.5 lock nut (fine thread) from the
back of the tooth using a 24 mm wrench or socket.
Remove the worn cutting tooth while noting its orienta-
tion so that the replacement tooth will be installed in the
same manner.
Install the replacement tooth and lock nut using a torque
wrench set to 160 ft-lb (215 N-m).
The stump grinder has six (6) grease points: two (2)
flywheel bearings, two (2) hinge pins, and two (2) on the
PTO shaft. Check each grease point prior to use and add
grease as needed.
**Warning: These grease points come pre-greased from
the factory. Do not add grease to these points on a new
stump grinder. Over-greasing can damage the bearing
seals.**
Flywheel Shaft Bearings (Underside of Flywheel Housing)
Right Pivot Hinge
Left Pivot Hinge
22
www. mechmaxx.com
PTO Shaft: Slip Clutch End PTO Shaft: Tractor End
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