Craftsman 315.115470 Operator's Manual page 16

INSTALLING BITS USING THE KEYLESS CHUCK
See Figures 13- 14.
[] Lock the switch trigger by placing the direction of
rotation selector in the center position.
[] Turn the auto lock selector to drill mode.
[] 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 drill bit.
[] Tighten the chuck jaws on the drill bit.
UNLOCK
DRILL BIT (RELEASE)
LOCK
(TIGHTEN)
CHUCK
BODY
Fig. 14
REMOVING BITS USING THE KEYLESS CHUCK
[] Lock the switch trigger by placing the direction of
rotation selector in the center position.
[] Rotate the chuck sleeve clockwise to open the chuck
jaws.
NOTE: Rotate the chuck body in the direction of the
arrow marked UNLOCK to loosen the chuck jaws. Do
not use a wrench to tighten or loosen the chuck jaws.
[] Remove the drill bit.
RIGHT
Fig. 13
_IIL WARNING: Make sure to insert the drill bit straight
into the chuck jaws. Do not insert the drill bit into the
chuck jaws at an angle then tighten, as shown in
figure 14. This could cause the drill bit to be thrown
from the drill, resulting in possible serious personal
injury or damage to the chuck.
Rotate the chuck clockwise to tighten the chuck jaws
securely on the bit.
NOTE: Rotate the chuck body in the direction of the
arrow marked LOCK to tighten the chuck jaws. Do not
use a wrench to tighten or loosen the chuck jaws.
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