Craftsman 973.274930 Owner's Manual page 12

CHUCK REMOVAL
See Figures 13, 14, and 15.
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.
• Insert a 5/16 inch or larger allen wrench (hex key
wrench) into the chuck of your drilland tighten the
chuck jaws securely.
• Tap the allen wrench sharply with a mallet in a
clockwise direction. See Figure 13. This will
loosen the screw in the chuck for easy removal.
MALLET
KEYLESS
CHUCK
CHUCK
JAWS
Fig. 13
Open chuck jaws and remove allen wrench.
Remove the chuck screw by turning it in a clock-
wise direction. See Figure 14. Note: The screw
has left hand threads.
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 15.
Fig. 15
TO RETIGHTEN A LOOSE CHUCK
The chuck 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 trigger by placing the direction of
rotation selector in center position.
• 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. 14
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