Ryobi HD1800M Operator's Manual page 12

INSERTING BITS
See Figure 7.
Follow these steps to insert bits.
I Lock the trigger switch by placing the rotation
selector in the center position.
I Position the chuck jaws so that the opening is
slightly larger than the drill bit you intend to use.
Note: To open the chuck jaws, turn the chuck
sleeve counterclockwise. To close the chuck jaws,
turn the chuck sleeve clockwise.
I Raise the front of the drill to keep the drill bit from
falling out of the chuck jaws.
WARNING:
Do not insert a drill bit into the chuck jaws and tighten
as shown in Figure 8. This could cause the drill bit to
be thrown from the drill resulting possible serious in-
jury or damage to the chuck.
I Insert the drill bit completely into the chuck.
I Tighten the chuck jaws securely on the drill bit using
the chuck key provided. Do not use a wrench to
tighten or loosen the chuck jaws.
REMOVING BITS
See Figure 7.
Follow these steps to remove bits.
I Lock the trigger switch by placing the rotation
selector in the center position.
I Loosen the chuck jaws using the chuck key pro-
vided.
I Remove the drill bit from the chuck jaws.
ADJUSTMENTS
DRILL BIT
CHUCK JAWS
12
UNLOCK
(Release)
LOCK
(Tighten)
CHUCK SLEEVE
RIGHT
WRONG
Fig. 7
Fig. 8