Craftsman 315.271271 Owner's Manual page 16

CHUCK REMOVAL
See Figures 20, 21, and22.
The chuck must be removed in order to use some
accessories. To remove:
• Lock the switch trigger by placing the direction of
rotation selector in center position. See Figure 13.
• Insert a 5/16 inch or larger hex key wrench into the
chuck of your drill and tighten the chuck jaws securely.
• Tap the wrench sharply with a mallet in a clockwise
direction. See Figure 20. This will loosen the screw in
the chuck for easy removal.
MALLET
CHUCKJAWS
\
HI KEYLESS
WRENCH CHUCK
Fig. 20
Open chuck jaws and remove wrench. Remove the
chuck screw by turning it in a clockwise direction.
See Figure 21.
Note: The screw has left hand threads.
SCREWDRIVER
Fig. 21
Insert hex key wrench in chuck and tighten chuck
jaws securely. Tap sharply with a mallet in a counter-
clockwise direction. This will loosen chuck on the
spindle. It can now be unscrewed by hand.
See Figure 22.
Fig. 22
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on spindle and develop a
wobble. Periodically check chuck screw for tightness. A
loose chuck screw may cause the chuck jaws to bind and
prevent them from closing.
To tighten, follow these steps:
• Lock the switch trigger by placing the direction of
rotation selector in center position. See Figure 13.
• Open the chuck jaws.
• Insert hex key wrench into chuck and tighten chuck
jaws securely. Tap wrench sharply with a mallet in a
clockwise direction. This will tighten chuck on the
spindle.
• Open the chuck jaws and remove wrench.
• Tighten the chuck screw.
Note: The chuck screw has left hand threads.
16