Hitachi DH 28PC Mode D'emploi Et Instructions De Securite page 14

English
Fig. 19
(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. 20)
Guide plate
Center pin
Core bit tip
Core bit
Fig. 20
2. How to bore (Fig. 21)
(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 establish.
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
deteriorate the tip edge of the drill bit,
resulting in reduced service life of the
rotary hammer.
14
Fig. 21
CAUTION:
When removing the center pin and the
guide plate, turn OFF the switch and
disconnect the plug form the receptacle.
3. Dismounting. (Fig. 22)
Remove the core bit shank from the
rotary hammer and strike the head of the
core bit shank strongly two or three times
with the manual hammer holding the
core bit, then the thread becomes loose
and the core bit can be removed.
Core bit shank
Fig. 22