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2. How to bore (Fig. 16)
(1) Connect the plug to the receptacle.
(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.
CAUTION:
When removing the center pin and the guide plate,
turn OFF the switch and disconnect the plug from
the receptacle.
3. Dismounting (Fig. 17)
Remove the core bit shank from the rotary hammer
and strike the head of the core bit shank strongly
two or three times with a manual hammer holding
the core bit, then the thread becomes loose and
the core bit can be removed.
Fig. 15
Center pin
Core bit
Core bit tip
Guide plate
Fig. 16
Core bit
shank
Fig. 17
01Eng_DH38MS_US 7/14/09, 9:2211