Page 4SKU 47991 For technical questions, please call 1-800-444-3353.
21. Use proper size and type extension
cord. If an extension cord is required,
it must be of the proper size and type
to supply the correct current to the
tool without heating up. Otherwise,
the extension cord could melt and
catch re, or cause electrical damage
to the tool. This tool requires use of
an extension cord of 0 to 10 amps
capability (up to 50 feet), with wire size
rated at 18 AWG. Longer extension
cords require larger size wire. If you
are using the tool outdoors, use an
extension cord rated for outdoor use
(signied by “WA” on the jacket).
22. Maintenance. For your safety,
maintenance should be performed
regularly by a qualied technician.
23. The warnings, cautions, and
instructions discussed in this
instruction manual cannot cover
all possible conditions and
situations that may occur. It must
be understood by the operator that
common sense and caution are
factors which cannot be built into
this product, but must be supplied
by the operator.
UNPACKING
When unpacking, check to make sure
the parts listed on page 6 are included. If
any parts are missing or broken, please call
Harbor Freight Tools at the number on the
cover of this manual as soon as possible.
OPERATION
Refer to FIGURE 1 below.
Warning! Always unplug the unit when
changing bits.
Warning! After drilling or driving screws,
the bit will be extremely hot. Do not
touch it until it has had ample time to
cool down.
1. Insert the Chuck Key (41) into one of
the holes in the Chuck (3) and turn it
counterclockwise to open the jaws.
2. Insert the bit and hand tighten it, then
tighten it with the Chuck Key (41) by
turning it clockwise.
Torque
Switch
Trigger
Power Cord
Side Handle
Chuck
Lock Button
Carbon Brush
(also found on bottom of tool)

Figure 1