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7. Using the light
Pull the trigger switch to light up the light. The light keeps
on lighting while the trigger switch is being pulled. The
light goes out after releasing the trigger switch. (Fig. 11)
(The light automatically goes out 10 seconds after
releasing the trigger switch.)
CAUTION
Do not expose directly your eye to the light by looking into
the light.
If your eye is continuously exposed to the light, your eye
will be hurt.
8. Mounting and dismounting of the bit
(1) Mounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front)
to open the clip on the keyless chuck. After inserting a
driver bit, etc., into the keyless drill chuck, and tighten
the sleeve by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 12)
○ If the sleeve becomes loose during operation, tighten it
further.
The tightening force becomes stronger when the sleeve
is tightened additionally.
(2) Dismounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front), and
then take out the bit etc. (See Fig. 12)
NOTE
If the sleeve is tightened in a state where the clip of the
keyless chuck is opened to a maximum limit, a click
noise may occur. This is the noise that occurs when the
loosening of the keyless chuck is prevented and is not a
malfunction.
CAUTION
When it is no longer possible to loosen the sleeve, use a
vise or similar instrument to secure the bit. Set the clutch
mode between 1 and 7 and then turn the sleeve to the
loose side (left side) while operating the clutch. It should
be easy now to loosen the sleeve.
9. Automatic spindle-lock mechanism
This unit has automatic spindle-lock mechanism for quick
bit changes.
10. Confi rm that the battery is mounted correctly
11. Check the rotational direction
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. 13) (The
are provided on the body.)
CAUTION
Always use this unit with clockwise rotation, when using it
as an impact drill.
12. 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.
NOTE
A buzzing noise is produced when the motor is about to
rotate; This is only a noise, not a machine failure.
16
OPERATIONAL CAUTIONS
○ Resting the unit after continuous work
(1) The power tool is equipped with a temperature protection
circuit to protect the motor.
Continuous
temperature of the unit to rise, activating the temperature
protection circuit and automatically stopping operation.
If this happens, allow the power tool to cool before
resuming use.
(2) After use for continuous tightening wood screw works,
rest the unit for 15 minutes or so when replacing the
battery. The temperature of the motor, switch, etc., will
rise if the work is started again immediately after battery
replacement, eventually resulting in burnout.
MAINTENANCE AND INSPECTION
1. Inspecting the tool
Since use of a dull tool will degrade effi ciency and cause
possible motor malfunction, sharpen or replace the tool
as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Cleaning on the outside
When the driver drill is stained, wipe with a soft dry cloth
or a cloth moistened with soapy water. Do not use chloric
solvents, gasoline or paint thinner, for they melt plastics.
5. Storage
Store the driver drill in a place in which the temperature is
less than 40°C and out of reach of children.
NOTE
Make sure that the battery is fully charged when stored
for a long period (3 months or more). The battery with
smaller capacity may not be able to be charged when
used, if stored for a long period.
NOTE
Storing Lithium-ion Batteries
Make sure the lithium-ion batteries have been fully
and
marks
charged before storing them.
Prolonged storage of batteries with a low charge may
result in performance deterioration, signifi cantly reducing
battery usage time or rendering the batteries incapable of
holding a charge.
However, signifi cantly reduced battery usage time may
be recovered by repeatedly charging and using the
batteries two to fi ve times.
If the battery usage time is extremely short despite
repeated charging and use, consider the batteries dead
and purchase new batteries.
6. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modifi cation and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized Service
Center.
bolt-tightening
work
may
cause
the
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