English
As the remaining battery indicator shows somewhat differently depending on ambient temperature and battery characteristics, read it as a reference.
NOTE:
Do not give a strong shock to the switch panel or break it.It may lead to a trouble.
To save the battery power consumption, the remaining battery indicator lamp lights while pressing the remaining battery indicator switch.
9.How to use the LED light
Every time you press the light switch on the switch panel, the LED light lights or goes off. (Fig. 12)
To prevent the battery power consumption, turn off
the LED light frequently.
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.
NOTE:
To prevent the battery power consumption caused
by forgetting to turn off the LED light, the light goes off automatically in about 15 minutes.
10.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. 13).
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. 13).
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.
11.Automatic
This unit has automatic
12.Confirm that the battery is mounted correctly
13.Check the rotational direction
The bit rotates clockwise (viewed from the rear side) by pushing the
The
bit counterclockwise (See Fig. 14). (The L and R marks are provided on the selector button.)
CAUTION
Always use this unit with clockwise rotation, when using it as an impact drill.
14. 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.
15.For drilling into brick
Excessive pressing force never increases drilling speed. It will not only damage the drill tip or reduce working efficiency, but could also shorten the service life of drill bit. Operate the impact driver drill within
MAINTENANCE AND INSPECTION
1.Inspecting the tool
Since use of as dull tool will degrade efficiency 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.Inspecting the carbon brushes (Fig. 15)
The motor employs carbon brushes which are consumable parts. Since and excessively worn carbon brush can result in motor trouble, replace the carbon brush with new ones when it becomes worn to or near the “wear limit”. In addition, always keep carbon brushes clean and ensure that they slide freely within
the brush holders.
NOTE
When replacing the carbon brush with a new one, be sure to use the Hitachi Carbon Brush Code No. 999054.
5.Replacing carbon brushes
Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a flat head screw driver, etc., as shown in Fig. 17.
When installing the carbon brush, choose the direction so that the nail of the carbon brush agrees with the contact portion outside the brush tube. Then push it
in with a finger as illustrated in Fig. 18. Lastly, install the brush cap.
CAUTION
Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube. (You can insert whichever one of the two nails provided.)
Caution must be exercised since any error in this operation can result in the deformed nail of the carbon brush and may cause motor trouble at an early stage.
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