Page 13For technical questions, please call 1-888-866-5797.Item 58780 
 
SAFETYOPERATIONMAINTENANCE SETUP
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. 1.  Cord not connected.
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.)
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.  Turn off tool and allow to cool.  
Press reset button on tool.
4.  Have technician service tool.
Tool operates 
slowly.
Extension cord too long or 
wire size too small.
Eliminate use of extension cord.  If an extension cord 
is needed, use one with the proper diameter for its 
length and load.  See Table A on page 2.
Performance 
decreases 
over time.
1.  Accessory dull or damaged. 
2.  Carbon brushes worn or damaged.
1.  Keep cutting accessories sharp.  
Replace as needed.
2.  Have qualified technician replace brushes.
Excessive noise 
or rattling.
1.  Internal damage or wear.  (Carbon 
brushes or bearings, for example.) 
2.  Belt (if equipped) too loose (slipping) 
or too tight (bearing damage).
1.  Have technician service tool. 
2.  Properly tension belt.
Overheating. 1.  Forcing machine to work too fast.
2.  Accessory dull or damaged. 
3.  Blocked motor housing vents. 
 
4.  Motor being strained by long or 
small diameter extension cord.
1.  Allow machine to work at its own rate.
2.  Keep cutting accessories sharp.  
Replace as needed.
3.  Wear ANSI-approved safety goggles and 
NIOSH-approved dust mask/respirator while 
blowing dust out of motor using compressed air.
4.  Eliminate use of extension cord.  If an extension cord 
is needed, use one with the proper diameter for 
its length and load.  See Table A on page 2.
  Follow all safety precautions whenever diagnosing or servicing the tool.  
Disconnect power supply and remove the Safety Key, before service.