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-46-
Item Phenomenon Cause
Factory
standard
Inspection, repair or adjustment
3 Saw blade is locked. (a) Excessively fast
cutting speed
- • Reduce cutting speed.
(b) Core diameter of
extension cord is too
small.
- • Use a thicker and shorter
extension cord.
(c) Excessive cutting
force is applied due to
dull saw blade.
- • Resharpen saw blade.
(d) Incorrect saw blade is
used.
- • 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.
(e) The saw blade binds
in workpiece during
cutting because
workpiece is warped
or bent.
- • Correct workpiece
deformation with planer.
4 Saw blade does not
rotate when switch is
triggered.
(a) Power cord is not
connected to power
supply.
- • Check power supply voltage.
• Connect the power cord to
power supply.
(b) Carbon brush wear
exceeds allowable
limit (5 mm).
- • Check the Carbon Brushes
[160] for wear.
• Replace the Carbon Brushes
[160].
(c) Contact failure of the
switch
- • Check the Switch (3P Faston
Type) W/O Lock [170] for
conductivity.
• Replace the Switch (3P
Faston Type) W/O Lock [170].
5 Saw blade runs too
slow
(4,950 min
-1
or less).
(a) Power supply voltage
is lower than rated
voltage.
- • Check for power supply
voltage.
• Check if extension cord is
appropriate. See Instruction
Manual for appropriate
extension cords.
6 Light (H) Ass’y does
not light.
(Only Model C 8FSHE)
(a) Improper wiring - • Check the wiring.
(b) Switch failure - • Check the Switch (W/Cover)
[167] for conductivity.
• Replace the Switch (W/Cover)
[167].
(c) Switching power
supply failure
- • Check the Switching Power
Supply Ass’y [165] for
conductivity, input and output
referring to "Wiring diagram."
• Replace the Switching Power
Supply Ass’y [165].
(d) Light (H) Ass’y failure - • Replace the Light (H) Ass’y
[175].