Hitachi DM 20V, Технические данные и руководство по обслуживанию, Страница: 11 / 31

--- 8 ---
High
speed
Gear shift dial
(2) 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. 2. 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.
Fig. 2
(3) Check the rotational direction
The bit rotates clockwise (viewed from the rear side) by pushing the R-side of the pushing button.
The L-side of the pushing button is pushed to turn the bit counterclockwise.
(The and marks are provided on the body.)
Pushing button
Switch trigger
mark
mark
CAUTION: Always use the hammer drill with clockwise rotation, when using it as an hammer drill.
L
R
R
L
Low speed
NOTE: If the L-side of the pushing button is pressed for reverse bit rotation, the stopper cannot be used.
Speed
control dial
Switch
trigger
Stopper
Fig. 3
Fig. 4
(4) Switch operation
When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops.
The rotational speed of the drill can be controlled by
varying the amount that the trigger switch is pulled.
Speed is low when the trigger switch is pulled slightly
and increases as the trigger switch is pulled more.
The desired rotation speed can be preselected with the
speed control dial. Turn the speed control dial clockwise
for higher speed and counterclockwise for lower speed.
Pulling the trigger and pushing the stopper, it keeps the switched-on condition which is convenient for
continuous running. When switching off, the stopper can be disconnected by pulling the trigger again.