Hitachi DH 40MR Instruction And Safety Manual page 12

English
CAUTION:
Although this machine is equipped with a safety 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 crush (Fig. 5)
By applying the tool tip to the chiseling or
crushing position, operate the rotary hammer
by utilizing its empty weight. Forcible pressing
or thrusting is unnecessary.
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) Push the button, release lock and turn the
selector lever clockwise.
(b) Align L of the selector lever and
lever holder as illustrated in Fig. 6.
(c) Release the button to lock the selector lever.
NOTE:
Turn the selector lever (do not push the button) to check if it is completely locked and make
sure that it does not turn.
4. When chipping and shredding 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".
12
of the
Selector Lever
Fig. 5
Lever Holder
Button
Fig. 6