6.HAMMER to ROTATION changeover (Fig. 9)

The Hammer Drill can be switched from HAMMER (hammer plus rotation) to ROTA- TION (rotation only) by turning the change lever. When boring concrete, stone, tile or similar hard materials, turning the change lever to HAMMER side. The drill head ham- mers against the material while continuing to rotate.

When boring metal, wood or plastic, turning the change lever to ROTATION side. The hammer drill can be used as an ordinary electric drill.

English

Change lever

HammerRotation

Fig. 9

CAUTION:

Do not use the Hammer Drill in the HAMMER function if the material can be bored by rotation only. Such action will not only reduce drill efficiency, but may also damage the drill tip.

NOTE

The change lever may not turn smoothly when changing from hammer drill mode to drill mode. (Fig. 9)

In this case, operate the machine for few seconds.

The spindle shaft will then be pushed forward, and the change lever can be moved smoothly.

7.High-speed/Low-speed changeover (Fig. 10)

Prior to changing speed, ensure that the hammer drill has come to a complete stop. To change speed, depress the shift lock and slide in to the appropriate direction, as indi- cated by the arrow in Fig. 10. The numeral "1" engraved in the hammer drill body denotes low speed, the numeral "2" denotes high speed.

Shift lock (Push and slide)

Fig. 10

CAUTION:

When changing the rotational speed with the shift lock, confirm that the switch is off. Changing the speed while the motor is rotating will damage the gears.

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Image 19
Hitachi DV 24DV instruction manual Hammer to Rotation changeover Fig, High-speed/Low-speed changeover Fig