Craftsman 315.DD2101 Operator's Manual page 8

SWITCH TRIGGER
See Figure 4, page i.
To turn the drill ON, depress the switch trigger. To turn it
OFF, release the switch trigger.
VARIABLE SPEED
The variable speed switch trigger delivers higher speed
with increased trigger pressure and lower speed with de-
creased trigger pressure.
NOTE: You might hear a whistling or ringing noise from
the switch during use. Do not be concerned; this is a nor-
mal part of the switch function.
DIRECTION OF ROTATION SELECTOR
(FORWARD/REVERSE/CENTER LOCK)
See Figure 4, page i.
The direction of bit rotation is reversible and is controlled
by a selector located above the switch trigger. With the drill
held in normal operating position, the direction of rota-
tion selector should be positioned to the left of the switch
trigger for forward drilling. The drilling direction is reversed
when the selector is to the right of the switch trigger.
Setting the direction of rotation selector in the OFF (center
lock) position helps reduce the possibility of accidental
starting when not in use.
NOTICE:
To prevent gear damage, always allow the
chuck to come to a complete stop before changing
the direction of rotation.
To stop the drill, release the switch trigger and allow the
chuck to come to a complete stop.
NOTE: The drill will not run unless the direction of rotation
selector is pushed fully to the left or right.
Avoid running the drill at low speeds for extended periods
of time. Running at low speeds under constant usage may
cause the drill to become overheated. If this occurs, cool
the drill by running it without a load and at full speed.
KEYLESS CHUCK
See Figure 5, page i.
The 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 LOCK
(tighten) or UNLOCK (release) the drill bit.
WARNING:
Do not hold the chuck 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
contact with the rotating drill bit. This could cause an
accident resulting in serious personal injury.
OPERATION
TWO-SPEED GEAR TRAIN (HI-LO)
See Figure 6, page i.
The drill has a two-speed gear train designed for drilling
or driving at LO (1) or HI (2) speeds. A slide switch is
located on top of the drill to select either LO (1) or HI (2)
speed. When using drill in the LO (1) speed range, speed
will decrease and unit will have more torque. When using
drill in the HI (2) speed range, speed will increase and unit
will have less torque. Use LO (1) speed for high torque
applications and HI (2) speed for fast drilling or driving
applications.
NOTICE:
running. Failure to obey this caution could result in
serious damage to the drill.
ADJUSTABLE TORQUE CLUTCH
This product is equipped with an adjustable torque clutch
for driving different types of screws into different materi-
als. The proper setting depends on the type of material
and the size of screw you are using.
ADJUSTING TORQUE
See Figure 7, page ii.
There are twenty-four torque indicator settings located on
the front of the drill.
 Rotate the adjusting ring to the desired setting.
• 1 - 4
• 5 - 8
• 9 - 12
• 13 - 16 For driving screws into hard wood
• 17 - 20 For driving large screws
• 21-
INSTALLING/REMOVING BITS
See Figures 8 - 10, page ii.
To install:
 Lock the switch trigger by placing the direction of
rotation selector in the center position.
 Open or close the chuck jaws to a point where the
opening is slightly larger than the bit size you intend to
use. Also, raise the front of the drill slightly to keep the
bit from falling out of the chuck jaws.
 Insert the bit.
WARNING:
the chuck jaws. Do not insert the bit into the chuck
jaws at an angle then tighten, as shown in figure 9.
This could cause the bit to be thrown from the drill,
resulting in possible serious personal injury or dam-
age to the chuck.
8 – English
Never change speeds while the tool is
For driving small screws
For driving screws into soft material
For driving screws into soft and hard
materials
For heavy drilling
Make sure to insert the bit straight into