Hitachi C 10FSB Technical Data And Service Manual page 72

Item
Phenomenon
3 Saw blade is locked.
Saw blade does not
4
rotate when switch is
triggered.
Saw blade runs too slow
5
-1
(3,400 min or less).
Cause (s)
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 Power cord is not
connected to power
supply.
b Carbon brush wear
exceeds allowable
limit (6 mm).
c Contact failure of the
switch
d Controller failure
a Power supply voltage
is lower than rated
voltage.
b Controller failure
Factory
standard
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Inspection, repair or adjustment
• Reduce cutting speed.
• Use a thicker and shorter
extension cord.
• Resharpen saw blade.
• Use a suitable Hitachi-supplied
saw blade.
• An increased number of teeth
on the saw blade increases the
cutting resistance. When using
a saw blade with a large
number of teeth, reduce the
cutting speed.
• Correct workpiece deformation
with planer.
• Check power supply voltage.
• Connect the power cord to
power supply.
• Check the Carbon Brushes
[180] for wear.
• Replace the Carbon Brushes
[180].
• Check the Switch [170] for
conductivity.
• Replace the Switch [170].
• Replace the Controller [151].
• Check that the Controller [151]
is mounted properly.
• Check for power supply
voltage.
• Check if extension cord is
appropriate. See Instruction
Manual for appropriate
extension cords.
• Replace the Controller [151].