Hitachi C 10FCH Technical Data And Service Manual page 44

Item
Phenomenon
3 Saw blade is locked.
Saw blade does not
4
rotate when switch is
triggered.
Saw blade runs too
5
slow (not within
4,500 --- 5,500 min
Cause
a Excessively fast
cutting speed
b Core diameter of
extension cord is too
small.
c Excessive cutting force
is applied due to dull
saw blade.
d Incorrect saw blade is
used.
e The saw blade binds in
workpiece during
cutting because
workpiece is warped
or bent.
a The power cord is not
connected to power
supply.
b The carbon brush
wear exceeds
allowable limit (5 mm).
c Contact failure of the
micro switch
a Power supply voltage
is lower than rated
-1 ).
voltage.
Factory
standard
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Inspection, repair or
adjustment
• Reduce cutting speed.
• Use a thicker and shorter
extension cord.
• Resharpen the saw blade.
• Use a suitable Hitachi-supplied
saw blade.
• If the saw blade has a large
number of teeth, the cutting
resistance will be increased.
When using a saw blade with a
large number of teeth, reduce
the cutting speed.
• Correct workpiece deformation
with a planer.
• Check power supply voltage.
• Connect the power cord to
power supply.
• Check the Carbon Brushes
[164] for wear.
• Replace the Carbon Brushes
[164].
• Check the Micro Switch [147]
for conductivity.
• Replace the Micro Switch [147].
• Check power supply voltage.
• Check if extension cord is
appropriate.