How To Use - Hitachi CR13VB User Manual

CAUTION
When cutting at low speed (scale of 1 – 2), never cut a
wooden board more than 10 mm thick or a mild steel
plate more than 2 mm thick. The load on the motor
can result in overheating and damage.
Although this unit employs a powerful motor,
prolonged use at a low speed will increase the load
unduly and may lead to overheating. Properly adjust
the saw blade to allow steady, smooth cutting
operation, avoiding any unreasonable use such as
sudden stops during cutting operation.
9. Adjusting the swing cutting operation
Two cutting systems can be selected with this unit.
The first is straight cutting, in which the saw blade is
moved linearly, and the second is the swing cutting,
in which the saw blade is swung like a pendulum.
(Fig. 15, Fig. 16)
(1) Straight cutting
You can perform straight cutting by setting the change
lever widthwise. Straight cutting should normally be
performed when cutting hard materials such as metal,
etc. (Fig. 15)
Straight cutting
(2) Swing cutting
You can perform swing cutting by setting the change
lever lengthways. Swing cutting should normally be
performed when cutting soft materials such as wood,
etc.
Swing cutting is efficient since the saw blade forcibly
bites into the material. (Fig. 16)
You can cut efficiently by swing cutting, mounting the
saw blade in whichever direction, upward or
downward.
Swing cutting
CAUTION
Even for soft materials, you should perform straight
cutting if you wish to make curved or clean cuts.
Dust and dirt accumulated on the change lever section
can degrade the function of the change lever.
Periodically clean the change lever section.

HOW TO USE

CAUTION
Avoid carrying it plugged to the outlet with your finger
on the switch. A sudden startup can result in an
unexpected injury.
5
Change lever
Fig. 15
Change lever
Fig. 16
Be careful not to let sawdust, earth, moisture, etc.,
enter the inside of the machine through the plunger
section during operation. If sawdust and the like
accumulate in the plunger section, always clean it
before use.
Do not remove the front cover (refer to Fig. 1).
Hold firmly the front cover by hand to operate.
But, do not extend your hand or finger beyond the
flange (see Fig.17) of front cover to avoid an injury.
During use, press the base against the material while
cutting.
Vibration can damage the saw blade if the base is not
pressed firmly against the workpiece.
Furthermore, a tip of the saw blade can sometimes
contact the inner wall of the pipe, damaging the saw
blade.
Select a saw blade of the most appropriate length.
Ideally, the length protruding from the base of the
saw blade after subtracting the stroke quantity should
be larger than the material (see Fig. 17 and
Fig. 18).
Flange of front cover
Stroke
Fig. 17
Stroke
Fig. 18
If you cut a large pipe, large block of wood, etc., that
exceeds the cutting capacity of a blade; there is a risk
that the blade may contact with the inner wall of the
pipe, wood, etc., resulting in damage. (Fig. 19,
Fig. 20)
Front cover