Hitachi Koki DV 20VD Manual De Instrucciones página 9

Depth gauge
Loosen
Side handle
9. IMPACT to ROTATION changeover (Fig. 5)
Shift the change lever between the right and
left positions to switch easily between IMPACT
(rotation and impact) and ROTATION (rotation only),
respectively.
To bore holes in hard materials such as concrete,
stone and tiles, shift the change lever to the right-
hand position (as indicated by the
The drill bit operates by the combined actions of
impact and rotation.
To bore holes in metal, wood and plastic, shift the
change lever to the left-hand position (as indicated
by the mark). The drill bit operates by rotational
action only, as in the case of a conventional electric
drill.
Change lever
Impact
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
effi ciency, but may also damage the drill tip.
Operating the Hammer Drill with the change
lever in mid-position may result in damage.
When switching, make sure that you shift the
change lever to the correct position.
Tighten
Fig. 4
mark).
Rotation
Fig. 5
NOTE:
The change lever may not shift smoothly when
changing from hammer drill mode to drill mode.
In this case, switch 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
Prior to changing speed, ensure that the switch
is in the OFF position, and the drill has come to a
complete stop.
To change speed, rotate the gear shift dial as
indicated by the arrow in Fig. 6. The numeral "1"
engraved on the drill body denotes low speed, the
numeral "2" denotes high speed.
If it is hard to turn the gear shift dial, turn the chuck
slightly in either direction and then turn the gear shift
dial again.
11. Check the rotational direction (Fig. 7, 8)
The bit rotates clockwise (viewed from the rear
side) by turning the rotational change lever
counterclockwise.
Rotational
change lever
The bit rotates counterclockwise (viewed from the
rear side) by turning the rotational change lever
clockwise.
English
Gear Shift
Dial
Fig. 6
Fig. 7
9