Hitachi DH 50MB User Manual download pdf (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) Pull the selector lever, release lock

and turn it clockwise.

(b) Align ▲ of the selector lever with ▲

on the

side of the undercover as

illustrated in Fig. 6.

NOTE:

Turn the selector lever (do not pull it up) to check if it is completely locked and make

sure that it does not turn.

4. When chipping and shredding at “hammering”:

CAUTION:

䡬 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.

䡬 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”.

Fig. 5

Fig. 6

Selector Lever

Undercover

▲

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Hitachi DH 50MB User Manual Page 12

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