Craftsman 28129 - Panasonic 21.6V Li-ion Hammer Drill Operator's Manual page 12

TO RETIGHTEN A LOOSE CHUCK
(Figs.
17 and
17a)
The chuck may 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:
. Unplug the hammer drill.
WARNING: To prevent personal
injury, ALWAYS disconnect the plug
from power source BEFORE
assembling parts, making adjustments
or changing bits.
2. Open the chuck jaws
3. Insert a 5/16 in. or larger hex key into the
chuck and tighten the chuck jaws securely.
Tap the hex key sharply with a mallet in a
clockwise direction. This will tighten the
chuck on the spindle.
4. Open the chuck jaws, and remove the hex
key.
5. Tighten the chuck screw. Note that the chuck
screw has left hand threads and
counterclockwise direction tightens instead of loosens.
Fig. 17a
[Z_ WARNING: The use of attachments or accessories that are not
i
recommended for this tool might be dangerous and could result in serious injury.
1
®
Sears and other Craftsman _ outlets offer a large selection of Craftsman drill/driver
accessories designed for all your drill/driving applications.
You may purchase kits and sets specifically for drilling and driving, twist drill bit sets,
a variety of power drill/driving bit sets, spade bit sets, hole saws, carbide-tipped masonry
drill bit sets that are percussion rated, extra long bits, magnetic bit holders and more.
Visit your local Sears store or other Craftsman outlets or shop sears.corn/craftsman for all
of the accessories for your hammer drill.
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