English
13
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.
OPERATIONAL CAUTIONS
○
Resting the unit after continuous work
(1)
The
power
tool
is
equipped
with
a
temperature
protection
circuit
to
protect
the
motor.
Continuous
bolt-tightening
work
may
cause
the
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
e
ffi
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
charged
before
storing
them.
Prolonged
storage
of
batteries
with
a
low
charge
may
result
in
performance
deterioration,
signi
fi
cantly
reducing
battery
usage
time
or
rendering
the
batteries
incapable
of
holding
a
charge.
However,
signi
fi
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,
modi
fi
cation
and
inspection
of
Hitachi
Power
Tools
must
be
carried
out
by
a
Hitachi
Authorized
Service
Center.
This
Parts
List
will
be
helpful
if
presented
with
the
tool
to
the
Hitachi
Authorized
Service
Center
when
requesting
repair
or
other
maintenance.
In
the
operation
and
maintenance
of
power
tools,
the
safety
regulations
and
standards
prescribed
in
each
country
must
be
observed.
MODIFICATIONS
Hitachi
Power
Tools
are
constantly
being
improved
and
modi
fi
ed
to
incorporate
the
latest
technological
advancements.
Accordingly,
some
parts
(i.e.
code
numbers
and
/
or
design)
may
be
changed
without
prior
notice.
Important notice on the batteries for the Hitachi
cordless power tools
Please
always
use
one
of
our
designated
genuine
batteries.
We
cannot
guarantee
the
safety
and
performance
of
our
cordless
power
tool
when
used
with
batteries
other
than
these
designated
by
us,
or
when
the
battery
is
disassembled
and
modi
fi
ed
(such
as
disassembly
and
replacement
of
cells
or
other
internal
parts).
NOTE
Due
to
HITACHI’s
continuing
program
of
research
and
development,
the
speci
fi
cations
herein
are
subject
to
change
without
prior
notice.
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000Book̲DS14DBEL̲C99211631̲310.indb 13
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2013/09/20 14:17:35