Adjusting Torque - Craftsman 315.116890 Operator's Manual

KEYLESS CHUCK
See Figure 5.
The drill has a keyless chuck to tighten or release 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 bit.
,_ WARNING: Do not hold the chuck with one hand
and use the power of the drill to tighten the chuck
jaws on the bit. The chuck body could slip in your
hand, or your hand could slip and come in contact
with the rotating bit. This could cause an accident
resulting in serious personal injury.
ADJUSTABLE TORQUE CLUTCH
This product is equipped with an adjustable torque clutch
for driving different types of screws into different materials.
The proper setting depends on the type of material and the
size of screw you are using.
ADJUSTING TORQUE
See Figure 6.
There are twenty-four torque indicator settings located on
the front of the drill.
[] Rotate the adjusting ring to the desired setting.
• 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 For driving screws into hard wood
17 - 20 For driving large screws
21- _ For heavy drilling
INSTALLING BITS
See Figures 7 - 8.
[] 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: Make sure to insert the bit straight into
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.
[] Tighten the chuck jaws securely on the bit.
NOTE: Rotate the chuck body in the direction of the
arrow marked LOCK to close the chuck jaws. Do not
use a wrench to tighten or loosen the chuck jaws.
11
CHUCK
JAWS
DiRECTiON OF ROTATION SELECTOR
(FORWARD/REVERSE/CENTER LOCK)
REVERSE
SWITCH t
TRIGGER
FORWARD
UNLOCK
(RELEASE)
KEYLESS
CHUCK
LOCK
(TIGHTEN)
TO DECREASE TORQUE
TORQUE ADJUSTMENTRiNG
TOINCREASE
TORQUE
Fig. 4
Fig. 5
Fig. 6