English
29
HOW TO USE THE CORE BIT
When boring penetrating large holes use the core bit. 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.
(2) Mount the core bit shank to the rotary
hammer (
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
).
2. How to bore (
Fig. 17
)
(1) Connect the plug to the receptacle.
(2) A spring is installed in the center pin.
Push it lightly to the wall or the
fl
oor straight.
Connect all over the surface of the core bit tip and start
operating.
(3) When boring about 5 mm in depth the position
of the hole will be 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. 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
manual hammer holding the core bit, then the thread becomes
loose and the core bit can be removed.
Core bit
Core bit
shank
Fig. 14
Fig. 15
Fig. 16
Center pin
Guide plate
Core bit tip
Core bit
Fig. 17
Core bit
shank
Fig. 18
000Book̲DH40SC̲ChS.indb 29
000Book̲DH40SC̲ChS.indb 29
2018/03/27 15:54:54
2018/03/27 15:54:54