Hitachi C12LSH Instruction Manual - Page 40

About, Handling, Motor

Page 40 highlights

English & CAUT ON: Never attempt to install saw blades larger than 12" (305 mm) in diameter. Always install saw blades that are 12" (305 mm) in diameter or less. MAINTENANCE AND INSPECTION &WARNING: To avoid an accident or personal injury, always confirm that the trigger switch is turned OFF and the power plug has been disconnected from the receptacle before performing any maintenance or inspection of this tool. 1. Inspecting the saw blade Always replace the saw blade immediately upon the first sign of deterioration or damage. A damaged saw blade can cause personal injury and a worn saw blade can cause ineffective operation and possible overload to the motor. &CAUTION: Never use a dull saw blade. When a saw blade is dull, its resistance to the hand pressure applied by the tool handle tends to increase, making it unsafe to operate the power tool. 2. Inspecting the carbon brushes (Fig. 53 and Fig. 54) The carbon brushes in the motor are expendable parts. If the carbon brushes become excessively worn, motor trouble might occur. Therefore, inspect the carbon brushes periodically and replace them when they have become worn to the wear limit line as shown in Fig. 53. Also, keep the carbon brushes clean so that they will slide smoothly within the brush holders. The carbon brushes can easily be removed after removal of the brush caps (see Fig. 54) with a slotted (minus) screwdriver. Wear limit line Brush cap 38 1/4" (6 mm 11/16"(17 mm) No. 38 indicates the last two numbers of carbon brush Code No. Fig. 53 C.)) Groove for driver Fig. 54 3. About Handling the Motor (see Fig. 1) Winding of the motor is said to be the heart of this tool. Exercise utmost caution not to damage the winding by exposing it to wash oil or water. NOTE: Accumulation of dust and the like inside the motor can result in a malfunction. After using the motor for 50 hours or so, carry out no-load running, and blow in the dry air from a wind hole at the motor's rear. Such action is effective to discharge dust and the like. 40

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English
&
CAUT
ON:
Never
attempt
to
install
saw
blades
larger
than
12"
(305
mm)
in
diameter.
Always
install
saw
blades
that
are
12"
(305
mm)
in
diameter
or
less.
MAINTENANCE
AND
INSPECTION
&WARNING:
To
avoid
an
accident
or
personal
injury,
always
confirm
that
the
trigger
switch
is
turned
OFF
and
the
power
plug
has
been
disconnected
from
the
receptacle
before
performing
any
maintenance
or
inspection
of
this
tool.
1.
Inspecting
the
saw
blade
Always
replace
the
saw
blade
immediately
upon
the
first
sign
of
deterioration
or
damage.
A
damaged
saw
blade
can
cause
personal
injury
and
a
worn
saw
blade
can
cause
ineffective
operation
and
possible
overload
to
the
motor.
&CAUTION:
Never
use
a
dull
saw
blade.
When
a
saw
blade
is
dull,
its
resistance
to
the
hand
pressure
applied
by
the
tool
handle
tends
to
increase,
making
it
unsafe
to
operate
the
power
tool.
2.
Inspecting
the
carbon
brushes
(Fig.
53
and
Fig.
54)
The
carbon
brushes
in
the
motor
are
expendable
parts.
If
the
carbon
brushes
become
excessively
worn,
motor
trouble
might
occur.
Therefore,
inspect
the
carbon
brushes
periodically
and
replace
them
when
they
have
become
worn
to
the
wear
limit
line
as
shown
in
Fig.
53.
Also,
keep
the
carbon
brushes
clean
so
that
they
will
slide
smoothly
within
the
brush
holders.
The
carbon
brushes
can
easily
be
removed
after
removal
of
the
brush
caps
(see
Fig.
54)
with
a
slotted
(minus)
screwdriver.
Wear
limit
line
38
1/4"
(6
mm
11/16"(17
mm)
No.
38
indicates
the
last
two
numbers
of
carbon
brush
Code
No.
Fig.
53
Brush
cap
C.))
Groove
for
driver
Fig.
54
3.
About
Handling
the
Motor
(see
Fig.
1)
Winding
of
the
motor
is
said
to
be
the
heart
of
this
tool.
Exercise
utmost
caution
not
to
damage
the
winding
by
exposing
it
to
wash
oil
or
water.
NOTE:
Accumulation
of
dust
and
the
like
inside
the
motor
can
result
in
a
malfunction.
After
using
the
motor
for
50
hours
or
so,
carry
out
no-load
running,
and
blow
in
the
dry
air
from
a
wind
hole
at
the
motor's
rear.
Such
action
is
effective
to
discharge
dust
and
the
like.
40