Harbor Freight Tools 3670 - Manual (Page 11)

Page 11 For technical questions, please call 1-800-444-3353. SKU 3670
troubleshooting
Problem Possible causes Likely Solutions
Tool will not start. Cord not connected. 1.
No power at outlet. 2.
Internal damage or wear. 3.
(Carbon brushes or switch, for
example.)
Check that cord is plugged in. 1.
Check power at outlet. If outlet is unpowered, 2.
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.
Have technician service tool.
3.
Tool operates slowly. Extension cord too long or wire 1.
size too small.
Applying too much pressure. 2.
Eliminate use of extension cord. If an extension 1.
cord is needed, use shorter/heavier gauge cord.
See Extension Cords in GROUNDING section.
Lessen amount of pressure on tool by turning
2.
torque setting to it minimum.
Performance
decreases over time.
Accessory dull or damaged. 1.
Carbon brushes worn or 2.
damaged.
Keep cutting accessories sharp. Replace as 1.
needed.
Have qualified technician replace brushes.
2.
Excessive noise or
rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. Forcing tool to work too fast. 1.
Accessory misaligned. 2.
Accessory dull or damaged. 3.
Blocked motor housing vents. 4.
Motor being strained by long or 5.
small diameter extension cord.
Allow tool to work at its own rate. 1.
Check and correct accessory to fence and/or 2.
table alignment.
Keep cutting accessories sharp. Replace as
3.
needed.
Wear ANSI-approved safety goggles and NIOSH-
4.
approved dust mask/respirator while blowing dust
out of motor using compressed air.
Eliminate use of extension cord. If an extension
5.
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.
loose hardware, misalignment or binding
of moving parts, cracked or broken parts,
damaged electrical wiring, and any
other condition that may affect its safe
operation.
AFtER uSE,
2. wipe external surfaces
of the tool with clean cloth. Do not use
solvents.
Inspect the Chuck and remove any dirt
3.
or debris.
PERIODIcALLY 4. check the Mounting
Screws (3) and tighten if necessary.
If Carbon Brushes (14) are worn, contact
5.
Harbor Freight Tools for replacements
and have a qualified service technician
replace them.
6. WARnIng! If the supply cord of
this power tool is damaged, it must be
replaced only by a qualified service
technician.