Hitachi DV 16V Instruction Manual page 11

7. Selecting the appropriate drill bit
When boring concrete or stone
Use the drill bits specified in the Optional Accessories.
When boring metal or plastic
Use an ordinary metalworking drill bit.
When boring wood
Use an ordinary woodworking drill bit.
However, when drilling 1/4" (6.5 mm) or smaller holes, use a metalworking drill bit.
8. Mounting and dismounting of the bit
For Drill chuck with chuck wrench (Fig. 2)
(1) Open the chuck jaws, and insert the bit
into the chuck.
(2) Place the chuck wrench in each of the
three holes in the chuck, and turn it in
the clockwise direction (viewed from the
front side). Tighten securely.
(3) To remove the bit, place the chuck
wrench into one of the holes in the chuck
and turn it in the counterclockwise
direction.
For keyless chuck (Fig. 3)
(1) Open the chuck jaws, and insert the bit into the chuck.
To open the chuck jaws, hold the retaining ring while turning the sleeve in the
counterclockwise direction (viewed from the front side).
(2) Firmly grasp the retaining ring and turn the sleeve in the clockwise direction. Tighten
securely.
(3) To remove the bit, firmly grasp the retaining ring and turn the sleeve in the
counterclockwise direction.
NOTE:
When the sleeve does not become loose any further, fix the side handle to retaining
ring, hold side handle firmly, then turn the sleeve to loosen by hand. (Fig. 4)
Sleeve
Loosen
Tighten
Retaining
ring
Fig. 3
Drill
chuck
Chuck
wrench
Tighten
Loosen
Fig. 2
Retaining ring
Side handle
Fig. 4
English
Sleeve
Loosen
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