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Hitachi C 6 U2 Manual

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32
English
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Prepare a wooden workbench (Fig. 1)
Since the saw blade will extend beyond the lower
surface of the lumber, place the lumber on a
workbench when cutting. If a square block is utilized
as a workbench, select level ground to ensure it
is properly stabilized. An unstable workbench will
result in hazardous operation.
CAUTION
To avoid possible accident, always ensure that the
portion of lumber remaining after cutting is securely
anchored or held in position.
ADJUSTING THE SAW PRIOR TO USE
1. Adjusting the cutting depth
As shown in Fig. 2, hold the handle with one hand
while loosening the knob with the other.
The cutting depth can be adjusted by moving the
base to the desired position. In such manner adjust
the cutting depth and then securely retighten the
knob.
2. Adjusting the riving knife
Loosen the hexagonal - socket bolt used to clamp
the riving knife, adjust the riving knife so that the
distance between the riving knife and the rim of
the blade is not more than 3 mm, and the rim of
the blade does not extend more than 3 mm beyond
the lowest edge of the riving knife (Fig. 3) and
securely retighten the bolt.
3. Adjusting the angle of inclination
As shown in Fig. 4 (A), Fig. 4 (B) by loosening the
wing-nut on the incline gauge and the wing-bolt on
the base, the saw blade may be inclined to a
maximum angle of 45° in relation to the base. After
having completed the adjustment, reconfirm that
the wing-nut and the wing-bolt are firmly tightened.
4. Regulating the guide (Fig. 5)
The cutting position can be regulated by moving
the guide to the left or right after loosening its
wingbolt. The guide may be mounted on either the
right or left side of the tool.
5. Adjusting the guide piece
On the circular saw, it is possible to make fine
adjustment of the fixing position of the guide piece,
where the saw blade and the premarked line are
to be aligned.
When the saw is shipped from the factory, the
linear portion of a front scale on the guide piece
is aligned with the central position of the saw blade
(Fig. 6).
Loosen the fixed M4 screw on the guide piece,
should the fixing position be wrong, and make
necessary adjustment of the position.
6. Using the dust collector
To use the vacuum cleaner to gather up saw dust,
attach the suction hose to the dust collector which
is attached to the main unit by M4 and M5 screws.
When attaching the dust collector always be sure
to change the lever to the short type at this same
time (Fig. 12).
CAUTION
Continuing to use the lever that was attached to
the main unit prior to shipping from the factory will
cause it to bind on the dust collector and will
interfere with the lower guard operation.
CUTTING PROCEDURES
1. Place the base on the material, then align the
premarked line and the sawblade with the guide
piece front scale section at the front of the base
(Fig. 6).
When the base is not slanted, use the large cutout
as the guide (Fig. 6, Fig. 7 (A)).
If the base is slanted (45 degrees), use the small
front scale as the guide (Fig. 6, Fig. 7 (B)).
2. Ensure that the switch is turned to the ON position
before the saw blade comes in contact with the
lumber. The switch is turned ON when the trigger
is squeezed; and OFF when the trigger is released.
3. Moving the saw straight at a constant speed will
produce optimum cutting.
CAUTIONS
Prior to cutting operation, make sure the material you
are going to cut. If the material to be cut is expected to
generate harmful / toxic dusts, make sure the dust bag or
appropriate dust extraction system is connected with
dust outlet tightly.
Wear the dust mask additionally, if available.
A coating of PFTE is applied to the bases of the C6BU2
type and C7BU2 type. Be careful not to press too hard on
the unit body since this tends to place a heavy load on
the motor. Using a gentle pressure will make the piece
slide easier and allow cutting with less force. Trying to
cut wood that is covered with hard particle material such
as sand or metal chips tends to easily scratch damage
the surface coating so use caution.
⅜ Before starting to saw, ensure that the saw blade
has reached full speed revolution.
⅜ Should the saw blade be stopped or made an
abnormal noise during operation, turn off the switch
immediately.
⅜ Always take care in preventing the power cord from
coming near the revolving saw blade.
⅜ Using the circular saw with the saw blade facing
upwards or sideways is very hazardous. Such
uncommon applications should be avoided.
⅜ When cutting materials, always wear protective
glasses.
⅜ When finished with a job, pull out the plug from
the receptacle.
… 33 …


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