Maintenance And Inspection - Hitachi C 10FCH Handling Instructions Manual

CAUTION
Always confirm that the motor head (see Fig. 1) does
not contact the crown molding vise assembly when it
is lowered for cutting. If there is any danger that it
may do so, loosen the 6 mm knob bolt and move the
crown molding vise assembly to a position where it
will not contact the saw blade.
MOUNTING AND DISMOUNTING SAW BLADE
WARNING
To prevent an accident or personal injury, always turn off
the trigger switch and disconnect the power plug from
the receptacle before removing or installing a blade.
If cutting work is done in a state where the bolt is not
sufficiently tightened, the bolt can get loose, the blade
can come off, and the lower guard can get damaged,
resulting in injuries.
Also, check that the bolts are properly tightened before
plugging the power plug into the receptacle.
If the bolts are attached or detached using tools other
than the 10 mm box wrench (standard accessory),
excessive or improperly tightening occurs, resulting
in injury.
1. Mounting the saw blade (Fig. 21, Fig. 22, Fig. 23 and
Fig. 24)
(1) Rotate the lower guard (plastic) to the top position.
(2) Use the driver to loosen the 4 mm screw fastening
the spindle cover and then remove the spindle cover.
(3) Press in spindle lock and loosen bolt with 10 mm box
wrench (standard accessory).
Since the bolt is left-hand threaded, loosen by turning
it to the right as show in Fig. 23.
NOTE
If the spindle lock cannot be easily pressed in to lock
the spindle, turn the bolt with 10 mm box wrench
(standard accessory) while applying pressure on the
spindle lock.
The saw blade spindle is locked when the spindle lock
is pressed inward.
(4) Remove the bolt and washer (B).
(5) Lift the lower guard and mount the saw blade.
WARNING
When mounting the saw blade, confirm that the
rotation indicator mark on the saw blade and the
rotation direction of the gear case(see Fig. 1)are
properly matched.
(6) Thoroughly clean washer (B) and the bolt, and install
them onto the saw blade spindle.
(7) Press in the spindle lock and tighten the bolt by turning
it to the left by standard accessories wrench(10 mm
box wrench) as indicated in Fig. 23.
CAUTION
Confirm that the spindle lock has returned to the
retract position after installing or removing the saw
blade.
Tighten the bolt so it does not come loose during
operation.
Confirm that the bolt has been properly tightened
before the power tool is started.
2. Dismounting the saw blade
Dismount the saw blade by reversing the mounting
procedures described in paragraph 1 above.
The saw blade can easily be removed after lifting the
lower guard.
CAUTION
Never attempt to install saw blades except
235 mm – 255 mm in diameter.

MAINTENANCE AND INSPECTION

WARNING
To avoid an accident or personal injury, always
confirm the trigger switch is turned OFF and that 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 lever (Fig. 25 and Fig. 26)
If the M6 hexagonal head bolts (2) are loose, align the
sides of the fence and saw blade with the steel square.
After adjusting the saw blade and fence to a ninety-
degree angle, tighten the lever securing hexagonal
head bolts (2).
3. Inspecting the carbon brushes
For your continued safety and electrical shock
protection, carbon brush inspection and replacement
on this tool should ONLY be performed by a Hitachi
Authorized Service Center.
4. Replacing supply cord
If the supply cord of Tool is damaged, the Tool
must be returned to Hitachi Authorized Service
Center for the cord to be replaced.
5. 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.
6. Inspecting the screws
Regularly inspect each component of the power tool
for looseness.
Re-tighten screws on any loose part.
WARNING
To prevent personal injury, never operate the power
tool if any components are loose.
7. Inspecting the lower guard for proper operation
Before each use of the tool, test the lower guard (see
Fig. 1) to assure that it is in good condition and that it
moves smoothly.
Never use the tool unless the lower guard operates
properly and it is in good mechanical condition.
8. Storage
After operation of the tool has been completed, check
that the following has been performed:
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