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Hitachi D 10 YB Manual

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English
CAUTION:
Check and make sure positively that the switch is
off before inserting the plug into the power outlet.
Otherwise, a sudden start of the tool definitely
results an accident.
2. Pressing force of drill
You can not get holes quickly even if pressing it
by strong force more than necessary.
It not only damages the tip of drill bits and decreases
the efficiency of operation, but also shortens the
life of the drill.
3. When drilling completely through the material
When the drill bit bores completely through the
material, careless handling often results in a broken
drill bit or damage to the drill body itself due to
the sudden movement of the drill. Always be alert
and ready to release pushing force and hold the
drill body securely with both hands when drilling
through the material.
4. Adjusting the drilling speed
D10YB is equipped with electric control circuit which
enables non-step speed control.
To adjust the speed, turn the dial shown in Fig. 5.
When the dial is set to “1”, the drilling speed is
minimum speed (500/min). When the dial is set to
“5”, the drilling speed is maximum speed (2300/
min). Adjust the drilling speed according to the
material.
NOTE:
When the dial is set to “1”, there can be cases
where no rotation takes place due to a power
situation, etc. In this case, raise the dial slightly
before use.
MAINTENANCE AND INSPECTION
1. Inspecting the drill bits
Since use of an abraded drill bits will cause motor
malfunctioning and degraded efficiency, replace the
drill bits with a new one or resharpening without
delay when 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. 7)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brushes with new ones which have the same carbon
brush No. shown in the figure when they become
worn to or near the “wear limit”. In addition, always
keep carbon brushes clean and ensure that they
slide freely within the brush holders.
5. Replacing carbon brushes
Disassemble the brush caps with a slotted-head
screwdriver the carbon brushes can the be easily
removed.
NOTE
Due to HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Information concerning airborne noise and vibration
The measured values were determined according to
EN60745 and declared in accordance with ISO 4871.
Measured A-weighted sound pressure level: 78 dB (A)
Uncertainty KpA: 3 dB (A).
Wear ear protection.
The typical weighted root mean square acceleration value
does not exceed 2.5 m/s
2
.
… 19 …


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