18
TWO-SPEED GEAR BOX (Fig. 8)
The drill/driver 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/driver to select either LO or HI
speed.
When using drill/driver in the
LO speed range, the speed will
decrease and the drill/driver will
have more power and torque. When using drill/driver in the HI speed range,
the speed will increase and the drill/driver 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.
NOTE: Avoid running the drill/driver at LO speed for extended periods of
time. Running at LO speed under constant use may cause the drill/driver to
become overheated. If this occurs, cool the drill/driver by running it without a
load at HI speed.
CAUTION: Never change gears while the tool is running. Failure to obey this
caution could result in serious damage to the drill/driver.
ADJUSTABLE TORQUE CLUTCH (Fig. 9)
The torque clutch can be adjusted
to 23+1 different settings. The
higher the torque setting, the more
force the drill/driver produces to
turn an object in either LO or HI
rotation speed.
When using the drill/driver for
different driving applications, it is
necessary to increase or decrease
the torque in order to help prevent
the possibility of damaging screw heads, threads, workpiece, etc.
Adjust the torque by rotating the torque-adjustment ring.
The proper setting depends on the job and the type of bit, fastener, and
Fig. 9
Fig. 8
Two-speed gearbox switch
To increase torque
Torque adjustment ring
To decrease torque
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