Hitachi DV 14DVA Manuel D'instructions page 15

3. Check the rotational direction
1 2
3 4
5
marks
R
R
Triger
switch
Fig. 6
4. Change rotation speed
Shift knob
Operate the shift knob to change the rotational speed. Move the shift knob in the direction
of the arrow (see Figs. 7 and 8).
When the shift knob is set to "LOW", the drill rotates at a low speed. When set to "HIGH",
the drill rotates at a high speed.
CAUTION:
When changing the rotational speed with the shift knob, confirm that the switch is off.
Changing the speed while the motor is rotating will damage the gears.
When a large force is required for operation (operations indicated in the following chart)
set the shift knob to "LOW". If "HIGH" is set and the unit is used, it may cause the motor
to burn out or malfunction prematurely.
Brick Drilling
Metal Drilling
Wood Drilling
Wood Screw Tightening
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The bit rotates clockwise (viewed from the rear side)
by pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn the
bit counterclockwise. (See Fig. 6). (The L and
are provided on the body.)
marks
L
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.
L
Speed is low when the trigger switch is pulled slightly
Selector
and increases as the trigger switch is pulled more.
Button
When releasing the trigger of the switch, the brake will
be applied for immediate stopping.
High speed
Fig. 7
When the diameter of the hole exceeds 3/8" (10 mm).
When the diameter of the hole exceeds 1/4" (6.5 mm).
When the diameter of the hole exceeds 11/16" (18 mm).
When the size of the wood screw exceeds 5/32" (4.1 mm)
diameter × 1-3/8" (35 mm).
Low speed
Shift knob
Fig. 8
English
R
marks
15