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12. Troubleshooting
Problem Possible cause Suggested corrective action
Motor does not start. 1. Power cable defective.
2. Connections on the motor or
switch defective.
3. Carbon brushes worn.
4. No power.
1. Replace the power cable.
2. Have the machine inspected by a
qualified electrician.
3. Replace the carbon brushes.
4. Check power source and replace
the fuse.
Machine vibrates excessively. 1. Standing on an uneven surface.
2. Abrasive wheel is unbalanced.
1. Place the machine on a level, even
surface.
2. Use diamond trueing tool to make
the wheel concentric to its shaft.
Sharpening surface is not flat. 1. Worn Sharpening stone grit.
2. Static grinding.
1. Use stone grader or diamond
trueing tool to correct the wheel’s
surface.
2. Move the tool across the stone
as you grind for even wear of the
stone.
Sharpening surface is poor. 1. Worn stone.
2. Leather honing wheel is dry.
3. Application pressure of tool is
too high.
1. Use stone grader to dress and
refresh the stone’s surface.
2. Add honing compound to
the wheel honing wheel.
3. Use less force.
Brush sparks when switch is
released.
1. Carbon brushes are worn.
2. Surfaces of the commutators are
not clean.
1. Replace the carbon brushes.
2. Clean the surfaces of the
commutators.
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