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Troubleshooting
problem
possible causes
Tool will
1. Cord not connected.
not start.
2. No power at outlet.
3. Tool's thermal reset breaker
tripped (if equipped).
4. Internal damage or wear.
(Carbon brushes or
Switch, for example.)
Tool operates
Extension cord too long
slowly.
or wire size too small.
Performance
1. Chisel dull or damaged.
decreases
2. Internal lubrication cold.
over time.
3. Carbon brushes worn
or damaged.
Excessive
Internal damage or wear.
noise or
(Carbon brushes or bearings,
rattling.
for example.)
Overheating.
1. Forcing tool to work too fast.
2. Chisel dull or damaged.
3. Blocked motor housing vents.
4. Motor being strained by long or
small diameter extension cord.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
Item 62811
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered,
3. Turn off tool and allow to cool.
4. Have technician service tool.
Eliminate use of extension cord. If an extension
cord is needed, use shorter/heavier gauge cord.
See Extension Cords in GROUNDING section.
1. Keep chisels sharp. Replace as needed.
2. Allow tool to operate with no load
3. Have qualified technician replace brushes.
Have technician service tool.
1. Allow tool to work at its own rate.
2. Keep cutting chisels sharp. Replace as needed.
3. Wear ANSI-approved safety goggles and
4. Eliminate use of extension cord. If an extension cord is
For technical questions, please call 1-888-866-5797.
Likely Solutions
turn off tool and check circuit breaker.
If breaker is tripped, make sure circuit has right
capacity for tool and circuit has no other loads.
Press reset button on tool.
for 2 minutes before use.
NIOSH-approved dust mask/respirator while
blowing dust out of motor using compressed air.
needed, use one with the proper diameter for its length
and load. See Extension Cords in GROUNDING section.
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