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 (#3) on the main housing as needed before each
use. Do not over-grease the bearings as this can blow out the seals and cause premature
bearing failure.
•
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.
REPLACING TEETH
1. Disconnect the PTO shaft from the tractor and set the stump grinder on a flat, level surface.
2. Remove the M16x1.5 lock nut (#19) (fine thread) from the back of the tooth using a 24 mm
wrench or socket.
3. Remove the worn cutting tooth while noting its orientation so that the replacement tooth will
be installed in the same manner.
4. Install the replacement tooth (#18) and lock nut (#19) using a torque wrench set to 160 ft•lb
(215 N•m). Refer to section Flywheel Tooth Torquing for more detail.
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