Hitachi DH 24PB Mode D'emploi Et Instructions De Securite page 16

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(3) Insert the center pin into the guide plate
until it stops.
(4) Engage the guide plate with the core
bit, and turn the guide plate to left or
right so that it does not fall even if it
faces downward. (Fig. 16)
2. How to bore (Fig. 17)
(1) Connect the plug to the power source.
(2) A spring is installed in the center pin.
Push it lightly to the wall or the floor
straight. Connect all over the surface
of the core bit tip and start operating.
(3) When boring about 3/16" (5 mm) in
depth the position of the hole will es-
tablish. Bore after that removing the
center pin and the guide plate from core
bit.
(4) Application of excessive force will not
only expedite the work, but will dete-
riorate the tip edge of the drill bit, re-
sulting in reduced service life of the ro-
tary hammer.
CAUTION:
When removing the center pin and the
guide plate, turn OFF the switch and
disconnect the plug form the recep-
tacle.
3. Dismounting. (Fig. 18)
Remove the core bit shank from the ro-
tary hammer and strike the head of the
core bit shank strongly two or three
times with the hammer holding the
core bit, then the thread becomes loose
and the core bit can be removed.
16
Fig. 15
Guide Plate
Center Pin
Core Bit Tip
Core Bit
Fig. 16
Fig. 17
Core Bit shank
Fig. 18