Craftsman 315.274990 Owner's Manual page 15

CHUCK REMOVAL
See Figures 17, 18, and 19.
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 6.
• Insert a 5/16 inch or larger allen wrench (hex key
wrench) into the chuck of your drill and tighten the
chuck jaws securely.
• Tap the allen wrench sharply with a mallet in a
clockwise direction. See Figure 17. This will
loosen the screw in the chuck for easy removal.
Insert allen wrench in chuck and tighten chuck
jaws securely. Tap sharply with a mallet in a
counterclockwise direction. This will loosen chuck
on the spindle. It can now be unscrewed by hand.
See Figure 19.
KEYLESS
CHUCK
CHUCK
JAWS
MALLET
WRENCH
Fig. 17
Open chuck jaws and remove allen wrench.
Remove the chuck screw by tuming it in a clock-
wise direction. See Figure 18. Note: The screw
has left hand threads.
J
Fig. 19
TO RETIGHTEN A LOOSE CHUCK
The chl)ck may become loose on spindle and develop
a wobble. Also, the chuck screw may become loose
causing the chuck jaws to bind and prevent them from
closing. To tighten, follow these, steps:
• Lock the switch triggSr by placing the direction of
rotation selector in center position. See Figure 6.
• Insert allen wrench into chuck and tighten chuck
jaws securely. Tap allen wrench sharply with a
mallet in a clockwise direction. This will tighten
chuck on the spindle;
• Open,the chuck jaws and remove allen wrench.
• Tighten the chuck screw. Note: The chuck screw
has left hand threads.
Fig. 18
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