Hitachi DV 20VB Impact to Rotation changeover Fig, High-speed/Low-speed changeover

English

groove on the side handle, adjust the position of the depth gauge in accordance with the desired depth of the hole, and firmly tighten the wing bolt.

9.IMPACT to ROTATION changeover (Fig. 7)

The Hammer Drill can be switched from IMPACT (impact plus rotation) to ROTATION (rotation only) by rotating the change lever (Fig. 1). When boring concrete, stone, tile or similar hard materials, rotating the change lever to IMPACT side. The drill head impacts against the material while continuing to rotate.

When boring metal, wood or plastic, rotating the change lever to ROTATION side. The drill rotates as an ordinary electric drill.

Change lever

ImpactRotation

Fig. 7

CAUTION

Do not use the Hammer Drill in the IMPACT 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 rotate smoothly when changing from hammer drill mode to drill mode (Fig. 7).

In this case, swith ON and operate the machine for few seconds. The spindle shaft will then be pushed forward, and the change lever can be moved smoothly.

10. High-speed/Low-speed changeover

To change speed, rotate the gear shift dial as indicated by the arrow in Fig. 8. The numeral "1" engraved on the drill body denotes low speed, the numeral "2" denotes high speed.

11.Confirm the direction of bit rotation

The bit rotates clockwise (viewed from the rear side) by pushing the R-side of the reversing switch lever.

The L-side of the lever is pushed to turn the bit counterclockwise. (Fig. 9)

Gear shift dial

Fig. 8

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