How To Use - Hitachi Koki DH 40MC Manual

English
(4) To remove the tool, fully pull the grip in the direction
of the arrow and pull out the tool (Fig. 3).
2 Pull the tool out
1 Pull the grip back
Fig. 3

HOW TO USE

1. How to drill holes (Fig. 4)
(1) Pull the switch trigger after applying the drill bit tip to
the drilling position.
(2) It is unnecessary to forcibly press the Rotary Hammer
main body. It is sufficient to slightly press the rotary
hammer to an extent that clips are freely discharged.
Fig. 4
CAUTION
Although this machine is equipped with a slip
clutch, if the drill bit becomes bound in concrete
or other material, the resultant stoppage of the
drill bit could cause the machine body to turn in
reaction. Ensure that the main handle and side
handle are gripped firmly during operation.
2. How to chisel or demolish (Fig. 5)
By applying the tool tip to the chiseling or demolishing
position, operate the rotary hammer by utilizing its own
weight. Forcible pressing or thrusting is unnecessary.
Fig. 5
8
3. When drilling at "rotation + hammering"
CAUTION
If you switch the selector lever during motor
rotation, the tool can start to rotate abruptly,
resulting in unexpected accidents. Be sure to
switch the selector lever when the motor is at a
complete stop.
(1) Switching to "rotation + hammering"
(a) Turn the selector lever.
(b) Align ▲ of the selector lever and
cover as illustrated in Fig. 6.
Selector lever
Fig. 6
NOTE
Turn the selector lever to check if it is completely
locked and make sure that it does not turn.
4. When crushing and chipping at "hammering":
CAUTION
○ If the selector lever is switched during motor
rotation, the tool can start to rotate abruptly,
resulting in unexpected accidents. Make sure to
switch the selector lever when the motor is at a
complete stop.
○ If the bull point or cold chisel is used at the
position of "rotation + hammering", the tool can
start to rotate, resulting in unexpected accidents.
Make sure that they are used at the positon of
"hammering".
(1) Switching to "hammering"
(a) Turn the selector lever.
(b) Align ▲ of the selector lever and
cover as illustrated in Fig. 7.
of the crank
of the crank