Craftsman 315.271270 - Manual (Page 16)

OPERATION
CHUCK REMOVAL
See Figures 20, 21, and 22.
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
CHUCK JAWS
HEX KEY
WRENCH
KEYLESS
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
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. 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 13.
■ 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.
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