Hitachi CR 13VB Instruction Manual And Safety Instructions page 12

English
(1) If you pull the trigger further in, the
speed of the blade accelerates. Begin
cutting at a low speed to ensure the
accuracy of your target cut position.
Once you've obtained a sufficient
cutting depth, increase the cutting
speed.
(2) On the dial scale, "5" is the maximum
speed and "1" the minimum. The
high speed is generally suitable for
soft materials such as wood, and the
low speed is suitable for hard
materials such as metal. We
recommend that you use the following
as a rough guide in selecting the
suitable speed for the materials you
are cutting.
Example of materials
to be cut
Mild steel pipes /
cast-iron tubes /
L-shaped angle steel
Wood / wood with nails
driven in
Stainless steel
Aluminum / brass / copper
Plaster board
Plastic / fiber board
CAUTION:
When cutting at low speed (scale of 1 –
2), never cut a wooden board more than
25/64" (10 mm) thick or a mild steel plate
more than 5/64" (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.
12
10. Adjusting the swing cutting operation
Recommended
dial scale
2 – 4
5
1 – 3
2 – 4
4 – 5
1 – 3
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. 16, Fig. 17)
(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. 16)
Straight cutting
Fig. 16
(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. 17)
Swing cutting
Fig. 17
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.
Change lever
Change lever