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Troubleshooting
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Internal damage or wear. (Power
Switch, for example.)
1. Check that cord is plugged in.
2. Check power at outlet.
If outlet is unpowered, turn off tool and
check circuit breaker. If breaker is tripped,
make sure circuit is right capacity for
tool and circuit has no other loads.
3. Have technician service tool.
Tool operates slowly. 1. Excess pressure applied to workpiece.
2. Power being reduced by long or small
diameter extension cord.
1. Decrease pressure, allow tool to do the work.
2. Eliminate use of extension cord.
If an extension cord is needed, use
one with the proper diameter for
its length and load. See Extension
Cords in GROUNDING section.
Performance
decreases over time.
Carbon brushes worn or damaged. Have qualified technician replace brushes.
Excessive noise
or rattling.
Internal damage or wear.
(Bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Blocked motor housing vents.
3. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Wear ANSI‑approved safety goggles
and NIOSH‑approved dust mask/
respirator while blowing dust out of
motor using compressed air.
3. Eliminate use of extension cord.
If an extension cord is needed,
use one with the proper diameter for
its length and load. See Extension
Cords in GROUNDING section.
Tool does not
operate effectively.
1. Accessory loose.
2. Accessory damaged, worn or
wrong type for the material.
1. Confirm accessory mandrel is
correct and Collet Nut is tight.
2. Check condition and type of accessory.
Use only proper type of accessory
in good condition.
If product has no serial number, record month and year of purchase instead.
Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts. Specify UPC 193175545404 when ordering parts.