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18
MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Trouble Probable Cause Solution
Front Rotor Bearing runs hot Front End Plate Spacer rubbing
the bore of the Front End Plate
Replace the Front End Plate and Front End Plate
Spacer combination.
Slow tool idle Bent or leaky Throttle Valve Replace the Throttle Valve.
Rough operation/vibration Improper lubrication or dirt
buildup
Disassemble the Tool and clean in a suitable clean-
ing solution. Assemble the Tool and inject 3 cc of
the recommended oil into the Inlet and run the
Grinder long enough to coat the internal parts with
the oil.
Worn or broken Rear Rotor
Bearing or Front Rotor Bearing
Replace the worn or broken Bearings. Examine the
Front End Plate, Front End Plate Spacer, Front Seal
Cup and Rear Rotor Bearing Spacers and replace
any damaged parts. If the rear end plate is
damaged, replace the Rotor.
Worn or broken Upper Arbor
Bearing or Lower Arbor Bearing
Replace the worn or broken Bearing.
Worn or broken Bevel Gear or
Bevel Pinion
Examine the Bevel Gear and Bevel Pinion. If either
is worn or damaged, replace both the Gear and the
Pinion because they are a matched set and must not
be used separately.
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.