18
PRIOR TO OPERATION
1. Preparing and checking the work environment
Make
sure
that
the
work
site
meets
all
the
conditions
laid
forth
in
the
precautions.
2. Checking the battery
Make
sure
that
the
battery
is
installed
fi
rmly.
If
it
is
at
all
loose
it
could
come
o
ff
and
cause
an
accident.
3. Installing the bit
Always
follow
the
following
procedure
to
install
driver
bit.
(
Fig. 5
)
(1)
Pull
the
guide
sleeve
away
from
front
of
the
tool.
(2)
Insert
the
bit
into
the
hexagonal
hole
in
the
anvil.
(3)
Release
the
guide
sleeve
and
it
returns
to
its
original
position.
(4)
If
you
want
to
remove
the
bit,
pull
the
guide
sleeve
away
from
front
of
the
tool.
CAUTION
If
the
guide
sleeve
does
not
return
to
its
original
position,
then
the
bit
is
not
installed
properly.
HOW TO USE
1. 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. 6
)
(The
and
marks
are
provided
on
the
body).
2. 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.
3. Using the hook
The
hook
is
used
to
hang
up
the
power
tool
to
your
waist
belt
while
working.
CAUTION
○
When
using
the
hook,
hang
up
the
power
tool
fi
rmly
not
to
drop
accidentally.
If
the
power
tool
is
dropped,
it
may
lead
to
an
accident.
○
When
carrying
the
power
tool
with
hooked
to
your
waist
belt,
do
not
fi
t
any
bit
to
the
tip
of
power
tool.
If
the
sharp
bit
such
as
drill
is
fi
tted
to
the
power
tool
when
carrying
it
with
hooked
to
your
waist
belt,
you
will
be
injured.
○
Install
securely
the
hook.
Unless
the
hook
is
securely
installed,
it
may
cause
an
injury
while
using.
(1)
Removing
the
hook.
Remove
the
screws
fi
the
hook
with
Philips
screw
driver.
(
Fig. 7
)
(2)
Replacing
the
hook
and
tightening
the
screws.
Install
securely
the
hook
in
the
groove
of
power
tool
and
tighten
the
screws
to
fi
x
the
hook
fi
rmly.
(
Fig. 8
)
4. 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. 9
)
(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.
5. 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
impact
driver
just
enough
to
keep
the
bit
fi
tting
the
head
of
the
screw.
CAUTION
Applying
the
impact
driver
for
too
long
tightens
the
screw
too
much
and
can
break
it.
Tightening
a
screw
with
the
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
impact
driver
lined
up
straight
with
the
screw.
6. Tightening and loosening bolts
A
hex.
socket
matching
the
bolt
or
nut
must
fi
rst
be
selected.
Then
mount
the
socket
on
the
anvil,
and
grip
the
nut
to
be
tightened
with
the
hex.
socket.
Holding
the
tool
in
line
with
the
bolt,
press
the
power
switch
to
impact
the
nut
for
several
seconds.
If
the
nut
is
only
loosely
fi
tted
to
the
bolt,
the
bolt
may
turn
with
the
nut,
therefore
mistaking
proper
tightening.
In
this
case,
stop
impact
on
the
nut
and
hold
the
bolt
head
with
a
wrench
before
restarting
impact,
or
manually
tighten
the
bolt
and
nut
to
prevent
them
slipping.
OPERATIONAL CAUTIONS
1. Resting the unit after continuous work
After
use
for
continuous
bolt-tightening
work,
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.
NOTE
Do
not
touch
the
metal
parts,
as
it
gets
very
hot
during
continuous
work.
2. Cautions on use of the speed control switch
This
switch
has
a
built-in,
electronic
circuit
which
steplessly
varies
the
rotation
speed.
Consequently,
when
the
switch
trigger
is
pulled
only
slightly
(low
speed
rotation)
and
the
motor
is
stopped
while
continuously
driving
in
screws,
the
components
of
the
electronic
circuit
parts
may
overheat
and
be
damaged.
3. Use a tightening time suitable for the screw
The
appropriate
torque
for
a
screw
di
ff
ers
according
to
the
material
and
size
of
the
screw,
and
the
material
being
screwed
etc.,
so
please
use
a
tightening
time
suitable
for
the
screw.
In
particular,
if
a
long
tightening
time
is
used
in
the
case
of
screws
smaller
than
M8,
there
is
a
danger
of
the
screw
breaking,
so
please
con
fi
rm
the
tightening
time
and
the
tightening
torque
beforehand.
4. Work at a tightening torque suitable for the bolt
under impact
The
optimum
tightening
torque
for
nuts
or
bolts
di
ff
ers
with
material
and
size
of
the
nuts
or
bolts.
An
excessively
large
tightening
torque
for
a
small
bolt
may
stretch
or
break
the
bolt.
The
tightening
torque
increases
in
proportion
to
the
operation
time.
Use
the
correct
operating
time
for
the
bolt.
5. Holding the tool
Hold
the
tool
fi
rmly
with
both
hands.
In
this
case
hold
the
tool
in
line
with
the
screw
or
bolt.
It
is
not
necessary
to
push
the
tool
very
hard.
Hold
the
tool
with
a
force
just
su
ffi
cient
to
counteract
the
impact
force.
6. Con
fi
rm the tightening torque
The
following
factors
contribute
to
a
reduction
of
the
tightening
torque.
So
con
fi
rm
the
actual
tightening
torque
needed
by
screwing
up
some
bolts
before
the
job
with
a
hand
torque
wrench.
Factors
a
ff
ecting
the
tightening
torque
are
as
follows.
000Book̲WH14DBEL̲C99209721̲305.indb 18
000Book̲WH14DBEL̲C99209721̲305.indb 18
2013/06/13 10:55:58
2013/06/13 10:55:58