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(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 manual hammer
supporting on a rests. (Fig. 16)
9. Using the side handle
When you wish to change a position of the side
handle, turn grip of the side handle counterclockwise
to loosen it, and then fasten it firmly.
CAUTION:
When boring a hole, there can be a case where the
machine attempts to rotate by the reaction at the
time of penetrating a concrete wall and/or when a
tip of the blade comes in contact with the rebar.
Firmly fasten the side handle and hold the machine
with both of your hands. Unless you hold it securely,
an accident can occur.
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. 17).
Lubricate the thread of the core bit shank to facilitate
disassembly.
(1) Mount the bull point or cold chisel.
(2) Press the push button and set the change lever to
mark. (Fig. 12)
The rotation is released, turn the tool and adjust
the tool to desired position. (Fig. 13)
(3) Turn the change lever to
mark. (Fig. 11)
Then bull point or cold chisel is locked.
7. Using the stopper (Fig. 14)
(1) Loosen the wing bolt, and insert the stopper into
the mounting hole on the side handle.
(2) Adjust the stopper position according to the depth
of the hole and tighten the wing bolt securely.
8. How to use the drill bit (taper shank) and the taper
shank adapter
(1) Mount the taper shank adapter to the rotary hammer.
(Fig. 15)
(2) Mount the drill bit (taper shank) to the taper shank
adapter. (Fig. 15)
Fig. 12
Push button
Change lever
Fig. 13
Fig. 14
Stopper
Side handle
Mounting hole
Wing bolt
Fig. 15
Front cap
Grip
Drill bit
Tape shank adapter
Fig. 16
Tape shank adapter
Cotter
Rests
01e_DH28PC_ENG.p65 6/8/10, 16:439