Hitachi WH 14DCL Handling Instructions Manual page 26

English
(1) The switch is turned on when the switch lever is
pulled after having slid the lock button to the ON
position, and is turned off when the switch lever is
released. (See Fig. 8)
(2) 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.
(3) Always make sure to return the lock button to the
OFF position after using. (See Fig. 8)
NOTE
A buzzing noise is produced when the motor is about to rotate. This is only a noise, not a
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machine failure.
Do not use the angle impact driver with the lock button in an intermediate position. If used
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with the lock button in an intermediate position, the switch may suddenly be turned off
while working or suddenly come on when carrying. When changing the position of the lock
button, slide the lock button until it reliably reaches and contacts the ON position or OFF
position.
Do not change the position of the lock button while the switch lever is being pulled. Only
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change the position of the lock button after having fi rst released the switch lever.
Do not place the angle impact driver in a manner such that the switch lever is facing
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downward. This can cause the switch to be turned on as a result of pressing the switch
lever.
Do not move the switch lever in the direction opposite that of the angle impact driver. This
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can cause a malfunction.
6. Tightening and loosening screws
Install the bit that matches the screw, line up the bit in the grooves of the head of the screw,
then tighten it.
Push the angle impact driver just enough to keep the bit fi tting the head of the screw.
CAUTION
Applying the angle impact driver for too long tightens the screw too much and can
break it.
Tightening a screw with the angle impact driver at an angle to that screw can
damage the head of the screw and the proper force will not be transmitted to the
screw.
Tighten with this angle impact driver lined up straight with the screw.
Switch lever
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Lock button
On side Off side
Fig. 8