Craftsman 315.271220 - Manual (Page 14)

OPERATION
CHUCK REMOVAL
See Figures 16, 17, and 18.
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 10.
■ Insert a 5/16 inch or larger alien wrench (hex key
wrench) into the chuck of your drill and tighten the chuck
jaws securely.
■ Tap the alien wrench sharply with a mallet in a
clockwise direction. See Figure 16. This will loosen
the screw in the chuck for easy removal.
MALLET
(HJCXJAVliS
ALIBI
vweof
Fig. 16
Open chuck jaws and remove alien wrench. Remove
the chuck screw by turning it in a clockwise direction.
See Figure 17.
Note: The screw has left hand threads.
Insert alien wrench in chuck and tighten chuck jaws
securely. Tap sharply with a mallet in a counterclock­
wise direction. This will loosen chuck on the spindle. It
can now be unscrewed by hand. See Figure 18.
Fig. 18
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on spindle and develop a
wobble. Also, the chuck screw may become loose caus­
ing 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 10.
■ Insert alien wrench into chuck and tighten chuck jaws
securely. Tap alien wrench sharply with a mallet in a
clockwise direction. This will tighten chuck on the
spindle.
■ Open the chuck jaws and remove alien wrench.
■ Tighten the chuck screw.
Note: The chuck screw has left hand threads.
Fig. 17
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