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Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. 1.  Battery Pack not properly 
connected. 
 
2.  Battery Pack not properly 
charged. 
3.  Battery Pack worn out. 
4.  Internal damage or wear.  
(Trigger, for example.)
1.  Remove Battery Pack, make sure there are no 
obstructions, reinsert the Battery Pack according 
to its shape (it should only fit one way), and press 
firmly until the Battery Pack locks in place.
2.  Make sure Charger is connected and 
operating properly.  Give enough time for 
Battery Pack to recharge properly.
3.  Dispose of old Battery Pack properly or recycle.  
Replace Battery Pack.
4.  Have technician service tool.
Tool operates slowly. 1.  Forcing tool to work too fast.
2.  Battery Pack wearing out.
1.  Allow tool to work at its own rate.
2.  Dispose of old Battery Pack properly or recycle.  
Replace Battery Pack.
Performance 
decreases over time.
Internal wear or damage. Have qualified technician service tool
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. 
 
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.
  Follow all safety precautions whenever diagnosing or servicing the tool.   
Disconnect Battery Pack and Charger power supply before service.
Record Product’s Serial Number Here: 
Note: If product has no serial number, record month and year of purchase instead.
Note: Replacement parts may be available for this item. 
Visit harborfreight.com/parts for a list of in stock parts.  Reference UPC 193175551344.