9
(3) Turn the switch ON, and drill a hole in prescribed
depth.
(4) To remove the drill bit (taper shank), insert the cotter
into the slot of the taper shank adapter and strike the
head of the cotter with a hammer supporting on a
rests (Fig. 13).
Fig. 13
HOW TO USE THE CORE BIT
(FOR LIGHT LOAD)
When boring penerating large holes use the core bit (for
light loads). At that time use with the center pin and the
core bit shank provided as optional accessories.
1. Mounting
CAUTION
Be sure to turn power OFF and disconnect the plug
from the receptacle.
(1) Mount the core bit to the core bit shank (Fig. 14).
Lubricate the thread of the core bit shank to facilitate
disassembly.
Fig. 14
(2) Mount the core bit to the rotary hammer (Fig. 15).
Fig. 15
(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 the left or the right so that it does not
fall even if it faces downward (Fig. 16).
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 the core bit tip flush to the surface and start
operating.
(3) When boring about 5 mm in depth the position of the
hole will be established. 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.
Fig. 17
CAUTION
When removing the center pin and the guide plate,
turn OFF the switch and disconnect the plug from the
receptacle.
3. Dismounting (Fig. 18)
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 hammer holding the core bit,
then the thread becomes loose and the core bit can
be removed.
Fig. 18
Core bit
Core bit shank
Thread
Tape shank adapter
Cotter
Rest
Core bit
Center pin
Guide plate
Core bit tip
Core bit shank
