Maintenance And Inspection - Hitachi C 10FCG Safety Instructions And Instruction Manual

English
(7) Press in the spindle lock and tighten the bolt by turning it to the left by
standard accessorie's wrench (5mm Hex. bar wrench) as indicated in
Fig. 27-c.
CAUTION:
∗ Confi rm 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.
Confi rm 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 safety cover.
CAUTION:
Never attempt to install saw blades larger than 10 in. (255mm) in
diameter.
Always install saw blades that are 10 in. (255mm) 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 ineff ective 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
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).
Hex. head bolt
Saw blade
Fence
Steel square
14
Lever
Fig. 28-a
Fig. 28-b
3. Inspecting the carbon brushes (Fig. 29 and Fig. 30)
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. 29.
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. 30) with a slotted (minus) screwdriver.
NOTE:
When replacing the carbon brushes, use only Hitachi carbon
brushes having "43" in the last two digit of its Code No. (see Fig. 29).
If you use other carbon brushes, the electric brake will not operate.
Wear limit line
No. 43 indicates the last
two numbers of carbon
1/4 in. (6mm)
brush Code No.
11/16 in. (17mm)
Fig. 29
Fig. 30
4. 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 eff ective to discharge dust and the like.
5. 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.
6. Inspecting the lower guard for proper operation
Before each use of the tool, test the lower guard (see Fig. 7) 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.
7. Storage
After operation of the tool has been completed, check that the following
has been performed:
(1) Trigger switch is in OFF position,
(2) Power plug has been removed from the receptacle,
(3) To prevent unauthorized operation of this tool, insert a padlock through
the hole in the switch trigger.
When the tool is not in use, keep it stored in a dry place out of the reach
of children.
8. Lubrication
Lubricate the following sliding surfaces once a month to keep the power
tool in good operating condition for a long time (see Fig. 1 and Fig. 2).
Use of machine oil is recommended.
Oil supply points:
∗ Rotary portion of hinge
∗ Rotary portion of vise assembly
Groove for driver
Brush cap