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SKU 93722
For technical questions please call 1-800-444-3353
Page 8
Operation
For use as a Hammer Drill:
CAUTION: Use only impact grade SDS-Plus bits, designed for SDS-Plus hammer
drills. Standard bits will not be properly held by this Chuck, and may break
under the force created by this tool. SDS-Plus impact grade bits are available
from Harbor Freight Tools.
1. The Auxiliary Handle must be installed for additional stability when Hammer
Drilling. Always use both hands to hold this tool during hammer drill operation.
To install Auxiliary Handle, slide the Auxiliary Handle Assembly (32) over the
Front Housing (24). Tighten the screw in the Handle Assemble to lock in place.
Adjust the length of the
Depth Gauge Rod to stop
the drilling process when the
correct hole depth is
reached. Tighten the Depth
Gauge Rod in place by
tightening the screw in the
Auxiliary Handle Assembly.
2. This tool has three settings,
Drill Only, Hammer Only
and Hammer Drill. Select
the proper setting for the
work you will do. Be sure
the tool has come to a
complete stop before moving the selector to another setting. Move the
Function Selector to the Hammer Drill setting. Please see picture on page 9
for reference. This setting will allow the drill to hammer as well as turn.
3. Press the Forward-Reverse Switch (61) to the right for forward drilling, press it
to the left for reverse drilling.
4. The speed of the tool is controlled by squeezing the Trigger (60). Progressively increase
or decrease pressure on the Trigger to make the tool operate faster or slower.
5. The Hammer Drill is best suited for drilling into hard materials such as
concrete or masonry. Select an appropriate size and type SDS-Plus hammer
drill bit (not included). Insert it onto the Chuck and tighten securely. See
instructions on page 7 for inserting SDS-Plus drill bits.
Warning: Always wear ANSI approved safety glasses and full face shield
when hammer drilling. Caution: Always check around and behind the area
being drilled to prevent drilling into wires, pipes or causing other unintentional
property damage. Always use 2 hands when using this tool.
The Hammer Drill with
Auxiliary Handle Assembly
Handle Assembly screw