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15
HOW TO USE THE CORE BIT (FOR LIGHT LOAD)
When boring penetrating large hole use the core bit (for light load). At that time use with
the center pin and the core bit shank provided as optional accessories.
1. Mounting
CAUTION:
ⅷ Be sure to turn power OFF and disconnect the plug from the receptacle.
(1) Mount the core bit to the core bit shank.
(Fig. 13)
Lubricate the thread of the core bit shank to
facilitate disassembly.
(2) Mount the core bit shank to the rotary
hammer. (Fig. 14)
(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 faced downward.
(Fig. 15)
2. How to bore (Fig. 16)
(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 perpendicularly.
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.
Core bit
Thread
Core bit shank
Fig. 13
Fig. 14
Fig. 15
Core bit
Core bit tip
Guide plate
Center pin
Fig. 16
e01_dh25pb(02_24)e.p65 2/14/03, 5:02 PM15