OPERATION
CHUCK REMOVAL
See Figures 14, 15, and 16.
The chuck must be removed in order to use some accesso- ries. To remove:
■Lock the switch trigger by placing the direction of rota- tion selector in center position. See Figure 4.
■Insert a 5/16 in. or larger hex key into the chuck of the drill and tighten the chuck jaws securely.
■Tap the hex key sharply with a mallet in a clockwise di- rection. See Figure 14. This will loosen the screw in the chuck for easy removal.
■Open the chuck jaws and remove the hex key. Remove the chuck screw by turning it in a clockwise direction. See Figure 15.
Note: The screw has left hand threads.
■Insert the hex key in the chuck and tighten chuck jaws securely. Tap sharply with a mallet in a counterclock- wise direction. This will loosen the chuck on the spindle. It can now be unscrewed by hand. See Figure 16.
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on spindle and develop a wobble. Periodically check chuck screw for tightness.
To tighten, follow these steps:
■Lock the switch trigger by placing the direction of rota- tion selector in center position. See Figure 4.
■Open the chuck jaws.
■Insert the hex key into the chuck and tighten chuck jaws securely. Tap the hex key sharply with a mallet in a clock- wise direction. This will tighten the chuck on the spindle. See Figure 14.
■Open the chuck jaws and remove the hex key.
■Tighten the chuck screw.
Note: The chuck screw has left hand threads.
22 
20 
18 
16 
Fig. 14
22 
20 
18 
16 
Fig. 15
22 
20 
18 
16 
Fig. 16
17