Product Manual
Page 14 of 19
Maintenance
⚠WARNING
Do not use solvents.
If the drill’s power supply cord is damaged, it must be replaced and only by a qualified service
technician.
Maintain the drill by adopting a program of conscientious repair and maintenance in accordance with
the following recommended procedures. It is recommended that the general condition of any tool be
examined before it is used. Keep your tool in good repair. Keep all cutting tools sharp and clean.
Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to
control. Keep handles dry, clean, and free from oil and grease. The following chart is based on a
normal operation schedule.
Maintenance Interval
Maintenance Point
Before each use
Inspect the general condition of the drill. Check for:
1. loose hardware,
2. misalignment or binding of moving parts,
3. damaged cord/electrical wiring,
4. cracked or broken parts, and
5. any other condition that may affect its safe operation.
After use
Wipe external surfaces of the hammer drill with a clean cloth.
Troubleshooting
Use the table below to troubleshoot problems before contacting service personnel or your local
dealer. If the problem continues after troubleshooting, call your local dealer for assistance.
Failure
Possible Cause
Corrective Action
Hammer drill will
not start.
1. Cord is not connected.
2. No power at outlet.
3. Drill’s thermal reset breaker tripped
(if equipped).
4. Internal damage or wear (carbon
brushes or trigger, for example).
1. Be sure cord is plugged in.
2. Check power at outlet. If outlet is not
powered, turn off the drill and check
the circuit breaker. If the breaker is
tripped, make sure the circuit is the
right capacity for the drill and the circuit
has no other loads.
3. Turn off the drill and allow it to cool.
Press the reset button.
4. Have a technician service the drill.
Hammer drill
operates slowly.
1. Forcing hammer drill to work too fast.
2. Extension cord is too long or cord
diameter is too small.
1. Allow hammer drill to work at its own
rate.
2. Do not use an extension cord. If an
extension cord is needed, use one with
the proper diameter for its length and
load.