15
20
15
OPERATION
USING THE LEVELS
See Figure 13.
Two levels are recessed in the motor housing of the
hammer drill. One is located on top, while the other is
located on the end. They can be used to keep drill bits
level during both horizontal and vertical drilling operations.
DRILLING
See Figure 13.
Follow these steps to drill.
■
Secure the material to be drilled in a vise or with
clamps to keep it from turning as the drill bit rotates.
■
Hold the tool firmly and place the bit at the point to
be drilled.
■
Depress the trigger switch to start the tool.
■
Move the drill bit into the workpiece, applying only
enough pressure to keep the bit cutting. Do not force
or apply side pressure to elongate a hole.
WARNING:
Be prepared for binding or breakthrough. When these
situations occur, the drill has a tendency to grab and
kick in the opposite direction and could cause loss of
control when breaking through material. If you are not
prepared, this loss of control could result in possible
serious injury.
HELPFUL TIPS
■
When drilling hard, smooth surfaces, use a center
punch to mark the desired hole location. This prevents
the drill bit from slipping off center as you start the
hole. You may, however, start holes without center
punching if you use the lower speed. To accomplish
this action, simply operate the drill at a lower speed
until the hole is started.
■
When drilling metals, use a light oil on the drill to keep
it from overheating. The oil will prolong the life of the
bit and increase the drilling action.
■
If the bit jams in the workpiece or if the drill stalls, stop
the tool immediately. Remove the bit from the
workpiece and determine the reason for jamming.
WARNING:
Do not force the tool. Forcing the tool can result in
jamming and loss of balance or footing, which could
result in personal injury.
Fig. 13
20
TOP VIEW
LEVEL
LEVEL
END VIEW
