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 ▲ of the selector lever and of the lever holder as illustrated in Fig. 6.

(c)Release the button to lock the selector lever.

Fig. 5

Lever Holder

Selector Lever

Button

Fig. 6

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”.

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Hitachi DH 40MR instruction manual How to chisel or crush Fig, When drilling at rotation + hammering