Hitachi Koki C 12RSH Instrucciones De Manejo página 20

English
The laser marker will not light up if the digital display
switch is turned off. (only on C12LSH)
Do not use the main unit near equipment that
generates electrical noise such as generators.
Electrical noise might cause faulty readings or
operation on the digital display.
13. Cutting operation
(1) As shown in Fig. 21 the width of the saw blade is the
width of the cut. Therefore, slide the workpiece to the
right (viewed from the operator's position) when
length is desired, or to the left when length
desired.
If a laser marker is used, align the laser line with the
left side of the saw blade, and then align the ink line
with the laser line.
(2) After turning on the switch and checking that the saw
blade is rotating at maximum speed, slowly push
down the handle while holding down the lever (A)
and bring the saw blade in the vicinity of the material
to be cut.
(3) Once the saw blade contacts the workpiece, push the
handle down gradually to cut into the workpiece.
(4) After cutting the workpiece to the desired depth, turn
the power tool OFF and let the saw blade stop
completely before raising the handle from the
workpiece to return it to the full retract position.
CAUTION
For maximum dimensions for cutting, refer to
"SPECIFICATIONS" table.
Increased pressure on the handle will not increase the
cutting speed. On the contrary, too much pressure
may result in overload of the motor and/or decreased
cutting efficiency.
Confirm that the trigger switch is turned OFF and the
power plug has been removed from the receptacle
whenever the tool is not in use.
Always turn the power off and let the saw blade stop
completely before raising the handle from the
workpiece. If the handle is raised while the saw blade
is still rotating, the cut-off piece may become jammed
against the saw blade causing fragments to scatter
about dangerously.
Every time one cutting of deep-cutting operation is
finished, turn the switch off, and check that the saw
blade has stopped. Then raise the handle, and return
it to the full retract position.
Be absolutely sure to remove the cut material from
the top of the turntable, and then proceed to the next
step.
Continued cutting operation can result in overload of
the motor. Touch the motor and if it's hot, stop your
cutting operation once and rest for 10 minutes or so,
and then restart your cutting operation.
Do not operate the head section or lift up the main
unit while grasping the digital display (Fig. 1) as this
could cause damage to the digital display.
14. Cutting narrow workpieces (Press cutting)
Slide the hinge down to holder (A), then tighten the slide
securing knob (A)/(B) (Fig. 2). Lower the handle to cut
the workpiece. Using the power tool this way will permit
cutting of workpieces of up to 107 mm square.
15. Cutting wide workpieces (Slide cutting)
(1) Workpieces up to 107 mm high and 312 mm wide:
Loosen the slide securing knob (A) (Fig. 2), grip the
handle and slide the saw blade forward.
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Then press down on the handle and slide the saw
blade back to cut the workpiece. This facilitates cutting
of workpieces of up to 107 mm in height and 312 mm
in width.
(2) Workpieces up to 120 mm high and 260 mm wide:
Workpieces of up to 120 mm in height and up to 260
mm in width can be cut in the same manner as
described in paragraph 15-(1) above.
CAUTION
When cutting a workpiece of 120 mm height, adjust
the lower limit position of the motor head so that the
is
gap between the lower edge of the motor head and
the workpiece will be 2 to 3 mm at the lower limit
position.
If the handle is pressed down with excessive or lateral
force, the saw blade may vibrate during the cutting
operation and cause unwanted cutting marks on the
workpiece, thus reducing the quality of the cut.
Accordingly, press the handle down gently and
carefully.
In slide cutting, gently push the handle back
(rearwards) in a single, smooth operation.
Stopping the handle movement during the cut will
cause unwanted cutting marks on the workpiece.
WARNING
For slide cutting, follow the procedures.
Forward slide cutting (toward the operator) is very
dangerous because the saw blade could kick upward
from the workpiece. Therefore, always slide the
handle away from the operator.
Always return the carriage to the full rear position after
each crosscut operation in order to reduce the risk of
injury.
Never put your hand on the side handle during the
cutting operation because the saw blade comes close
to the side handle when the motor head is lowered.
16. Miter cutting procedures
(1) Loosen the side handle and pull up the lever for angle
stoppers. Then, adjust the turntable until the indicator
aligns with desired setting on the miter scale (Fig. 22).
(2) Re-tighten the side handle to secure the turntable in
the desired position.
(3) The miter scale indicates both the cutting angle on
the angle scale and the gradient on the grade scale.
(4) The gradient, which is the ratio of the height to the
base of the triangular section to be removed, may be
used for setting the miter scale instead of the cutting
angle, if desired.
(5) Therefore, to cut a workpiece at a grade of 2/10, set
the indicator to position.
NOTE
Positive stops are provided at the right and left of the
0° center setting, at 15°, 22.5°, 30° and 45° settings.
Check that the miter scale and the tip of the indicator
are properly aligned.
Operation of the saw with the miter scale and indicator
out of alignment, or with the side handle not properly
tightened, will result in poor cutting precision.
17. Miter angle fine adjustment
(1) Rotate the turntable to the miter angle you need.
(2) When making fine adjustments of the miter angle, turn
the knob (A) while pulling up the lever (Fig. 23).
NOTE
Turning knob (A) clockwise, allows fine adjustment
of the turntable to the right. Turning knob (A)