Hitachi Koki USA DH 24PC - Manual (Page 13)

13
English
CAUTION:
⅜ When the drill bit touches an iron reinforcing rod, the bit will stop immediately
and the rotary hammer will react to revolve. Therefore please grip the side
handle and handle tightly as shown in Fig. 7.
3. Rotation only
This rotary hammer can be set to rota-
tion only mode by pressing the push
button and turning the change lever to
mark. (Fig. 8)
To drill a wood or metal material using
the separately sold drill chuck and chuck
adaptor, proceed as follows. Installing
drill chuck and chuck adaptor (Fig. 9):
(1) Mount the drill chuck to the chuck
adaptor.
(2) The part of the SDS-plus shank is the
same as the drill bit. Therefore, refer to
the item of “Mounting the drill bit” for
attaching it.
CAUTION:
⅜ Application of force more than necessary will not only reducing drilling effi-
ciency at all, but will deteriorate the tip edge of the drill bit and reduce the
service life of the rotary hammer in addition.
⅜ Drill bit may snap off while disengaging the rotary hammer from the jammed
hole. For disengaging, it is important to use a pushing motion or turn the drill
bit counterclockwise.
⅜ Do not attempt to drill anchor holes or holes in concrete with the main unit in
the rotation only function.
⅜ Do not attempt to use the rotary hammer in the rotation and striking function
with the drill chuck and chuck adaptor attached. This would seriously shorten
the service life of every components of the machine.
4. When driving machine screws
(Fig. 10)
First, insert the bit into the socket in the
end of chuck adaptor (D).
Next, mount chuck adaptor (D) on the
main unit using procedures described
in 5 (1), (2), (3), put the tip of the bit in
the slots in the head of the screw, grasp
the main unit and tighten the screw.
Fig. 9
Part of SDS-plus shank
Front Cap Grip
Drill Chuck
Chuck Adaptor
Fig. 8
Change Lever
Push
button
Fig. 10
Socket
Bit
Front Cap
Grip
Chuck Adaptor (D)