
Troubleshooting
Problem | 
  | Possible Causes | 
  | Likely Solutions | 
Tool will not start.  | 1.  | Cord not connected.  | 1.  | Check that cord is plugged in.  | 
  | 2.  | No power at outlet.  | 2.  | Check power at outlet. If outlet is  | 
  | 
  | 
  | 
  | unpowered, disengage the trigger and  | 
  | 
  | 
  | 
  | check circuit breaker. If breaker is  | 
  | 
  | 
  | 
  | tripped, make sure circuit is right capacity  | 
  | 
  | 
  | 
  | for tool and circuit has no other loads.  | 
  | 3.  | Tool’s thermal reset breaker  | 3.  | Disengage the trigger and allow tool to  | 
  | 
  | tripped (if equipped).  | 
  | cool. Press reset button on tool.  | 
  | 4.  | Internal damage or wear.  | 4.  | Have technician service tool.  | 
  | 
  | (Carbon brushes or switch, for  | 
  | 
  | 
  | 
  | example.)  | 
  | 
  | 
Tool operates slowly. Extension cord too long or wire size  | Eliminate use of extension cord. If an  | |||
  | too small.  | extension cord is needed, use shorter/  | ||
  | 
  | 
  | heavier gauge cord. See Extension Cords  | |
  | 
  | 
  | in GROUNDING section.  | |
Performance  | 1.  | Accessory dull or damaged.  | 1.  | Keep cutting accessories sharp.  | 
decreases over time.  | 
  | 
  | 
  | Replace as needed.  | 
  | 2.  | Carbon brushes worn or  | 2.  | Have qualified technician replace  | 
  | 
  | damaged.  | 
  | brushes.  | 
Excessive noise or  | Internal damage or wear. (Carbon  | Have technician service tool.  | ||
rattling.  | brushes or bearings, for example.)  | 
  | 
  | |
Drill bit slips in chuck  | 1.  | Jaws are loose.  | 1.  | Tighten chuck .  | 
  | 2.  | Bit is jammed in work piece.  | 2.  | Tighten chuck, then operate tool in  | 
  | 
  | 
  | 
  | reverse to back bit out of work piece.  | 
Overheating.  | 1.  | Forcing tool to work too fast.  | 1.  | Allow tool to work at its own rate.  | 
  | 2.  | Accessory dull, damaged, or  | 2.  | Keep cutting accessories sharp.  | 
  | 
  | bent.  | 
  | Replace as needed.  | 
3.Blocked motor housing vents. 3. Wear 
4. Motor being strained by long or  | 4. Eliminate use of extension cord. If  | 
small diameter extension cord.  | an extension cord is needed, use one  | 
  | with the proper diameter for its length  | 
  | and load. See Extension Cords in  | 
  | GROUNDING section.  | 
Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.
SKU 3273  | For technical questions, please call   | Page 13  |