8 - English
MODE SELECTOR
See Figure 8, page 12.
The mode selector allows you to quickly switch from drill
mode to drive mode. The mode is adjusted by rotating the
clutch torque and mode selector ring.
Drill mode should be used for drilling and other heavy duty
applications. Drive mode should be used for driving screws.
Hammer mode should be used for hammer drilling.
Select the option that best matches the type of bit, fastener,
and material you will be using.
Choose your
APPLICATION.
Choose the correct
SPEED: (1/LOW OR 2/HIGH)
Choose the correct
MODE: (DRIVE, DRILL, OR HAM-
MER)
ADJUSTING TORQUE
See Figure 9, page 12.
When using the hammer drill for various driving applications,
increasing or decreasing the torque helps prevent the pos-
sibility of damaging screw heads, threads, workpiece, etc.
In general, torque intensity should correspond to the screw
diameter. If the torque is too high or the screws too small, the
screws may be damaged or broken. The torque is adjusted
by rotating the clutch torque and mode selector ring.
The torque is greater when the clutch torque and mode
selector ring is set on a higher setting. The torque is less
when the clutch torque and mode selector ring is set on a
lower setting.
Rotate the adjustment ring to the proper torque setting for
the type of material and size of screw you are using.
• 1 - 4
For driving small screws
• 5 - 8
For driving screws into soft material
• 9 - 12
For driving screws into soft and hard
materials
• 13 - 16 driving screws into hard wood
• 17 - 22 For driving large screws
•
For heavy drilling
•
For drilling into masonry and concrete.
DRILLING/DRIVING SCREWS
See Figure 10, page 12.
Choose the correct
MODE: (DRIVE OR DRILL)
Check the direction of rotation selector for the correct
setting (forward or reverse).
Select low
speed
(1)
or high
speed
(2)
, depending on
your application. Refer to
Two-Speed Gear Train
and
Adjusting Torque
.
Secure the workpiece in a vise or with clamps to keep it
from turning as the bit rotates.
Hold the hammer drill firmly and place the bit at the point
to be drilled, or where the screw is to be driven.
WARNING:
Do not drive a screw where there is likely to be
hidden wiring behind the surface. Contact with a
“live” wire will make exposed metal parts of the
tool “live” and possibly shock the operator. If you
must drive a screw where hidden wire may be
present, always hold tool by insulated gripping
surfaces (handle) when performing the operation
to prevent a shock to the operator.
Depress the switch trigger to start the hammer drill.
Move the bit into the workpiece, applying only enough
pressure to keep the bit cutting or driving the screw. Do
not force the drill or apply side pressure to elongate a
hole. Let the tool do the work.
WARNING:
When drilling, be prepared for binding at bit break-
through. When these situations occur, drill has a
tendency to grab and kick opposite to the direc-
tion of rotation and could cause loss of control
when breaking through material. If not prepared,
this loss of control can result in possible serious
injury.
When drilling hard, smooth surfaces, use a center punch
to mark the desired hole location. This will prevent the
bit from slipping off-center as the hole is started.
If the bit jams in the workpiece or if the hammer drill
stalls, stop the tool immediately. Remove the bit from
the workpiece and determine the reason for jamming.
NOTE:
This hammer drill has an electric brake. When the
switch trigger is released, the chuck stops turning. When
the brake is functioning properly, sparks will be visible
through the vent slots on the housing. This is normal and
is the action of the brake.
NOTE:
If operation creates considerable dust, frequent
vacuuming of the work area is recommended.
OPERATION
