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