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Craftsman 315.271690 Owner's Manual page 10

3/8 in. professional electric drill variable speed / reversible double insulated

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TOPVIEW
:ig. 9
CHUCK
REMOVAL
See Figure 10, 11, and 12.
The chuck must be removed in order to use some
accessories. To remove:
Unplug your drill.
,_k
WARNING: Failure to unptug your drill could
result in accidental starting causing serious
injury.
Insert a 8 mm (5/16 in.) or larger hex key wrench
into the chuck of your drill and tighten the chuck
jaws securely.
Tap the hex key wrench sharply with a mallet in a
clockwise direction. See Figure 10. This will loosen
the screw in the chuck for easy removal.
MALLET
CHUCKJAWS
CHUCK
HEXKEY
WRENCH
Fig. 10
10
Open the chuck jaws and remove hex key wrench.
Remove the chuck screw by turning it in a
clockwise direction, See Figure 1 I.
SCREWDRIVER
Fig. 11
Note: The chuck screw has Fefthand threads.
Insert hex key wrench into chuck and tighten chuck
jaws securely. Tap sharply with a mallet in a
counterclockwise
direction. This will loosen the
chuck on the spindle, it can now be unscrewed by
hand, See Figure 12.
MALLET
CHUCK
HEX KEY
WRENCH
CHUCK
Fig. 12
The chuck may at times become loose on the 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:
Unplug your drill.
,_k
WARNING: Failure to unplug your drill could
result in accidental starting causing serious
injury.
Insert hex key wrench into chuck and tighten chuck
jaws securely, Tap hex key wrench sharply with a
mallet in a clockwise direction. This will tighten the
chuck on the spindle.
Open the chuck jaws and remove the hex key
wrench.
Tighten the chuck screw,
Note: The chuck screw has left hand threads.

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