24
INSTALLING DRILL BITS
WARNING:
Never hold the chuck
body with one hand and use the drill
power to rotate the drill body to loosen
or tighten bits. Serious injury may
result.
This hammer drill is equipped with a
Jacobs
®
single-sleeve keyless
Hammerlock
®
chuck.
This chuck is designed to provide easy
one-handed tightening and loosening of
the chuck jaws. It also provides a positive
bit locking mechanism that prevents the bit
from slipping during the high vibration
hammer drilling action.
1. To open the keyless drill chuck, grasp
and hold the chuck body (1) and
rotate it in a counter-clockwise
direction until the chuck jaws (2) open
wide enough to accept the bit (3)
(Fig. 20).
NOTE:
The drill spindle will automatically
lock when the drill is stopped.
2. Insert the bit into the chuck the full
length of the jaws. Raise the front of
your drill slightly to prevent the bit from
falling out of the chuck jaws.
3. Tighten the chuck jaws onto the bit by
turning the chuck body in a clockwise
direction.
NOTE:
Make sure the bit is properly
aligned in the jaws and NOT at an angle.
An improperly aligned bit could be thrown
from the chuck when the drill is started.
Make sure the chuck jaws grasp the flat
sides of a screwdriver bit.
ASSEMBLY AND OPERATING
Fig. 20
!
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