16
kEYLESS CHUCk (Fig. 6)
The hammer drill has a keyless chuck to tighten or release drill bits in the chuck
jaws. The arrows on the chuck indicate which direction to rotate the chuck
body in order to GRIP (tighten) or OPEN
(release) the chuck jaws on the drill bit.
WARNING:
Do not hold the chuck body
with one hand and use the power of the
drill to tighten the chuck jaws on the drill
bit. The chuck body could slip in your hand,
or your hand could slip and come in con-
tact with the rotating bit. This could cause
an accident resulting in serious personal
injury.
TWO-SPEED GEAR BOX (Fig. 7)
The drill has a two-speed gear box designed for drilling or driving at LO or HI
speeds. A slide switch is located on the top of the drill to select either LO or HI
speed.
When using the drill in the LO speed
range, the speed will decrease and the
drill will have more power and torque.
When using drill in the HI speed range,
the speed will increase and the drill
will have less power and torque. Use
LO speed for high power and torque
applications and HI speed for fast drilling
or driving applications.
Use LO speed for starting holes without
a center punch, drilling metals or plastic, drilling ceramics, or in applications
requiring a higher torque (see below).
HI speed is better for drilling wood and wood composites and for using abrasive
and polishing accessories.
CAUTION!
Never change gears while the tool is running. Failure to obey this
caution could result in serious damage to the drill.
NOTICE:
Avoid running the drill at LO speed for extended periods of time.
Running at LO speed under constant usage may cause the drill to become
overheated. If this occurs, cool the drill by running it without a load at HI speed.
13
15
17
19
Fig. 6
(Release)
(Tighten)
Keyless
chuck
OPEN
GRIP
Fig. 7
Two-speed gearbox switch
