Hitachi CR13VB User Manual page 5

At this time, make certain that there exists no
clearance between the blade holder and the rubber
cap, and furthermore ensure that the saw-blade-
installed area can function smoothly.
Lever
Rubber cap
CAUTION:
Do not use any saw blade with a worn-out blade hole.
Otherwise, the saw blade can come off, resulting in
personal injury. (Fig. 10)
Blade
7. Adjusting the base
This unit employs a mechanism that can adjust the
base mounting position in three stages without the
use of a wrench or other tools.
(1) Press a pushbutton. When you do this, a base lever
will jump out to prepare the base for adjustment.
(Fig. 11)
Push button
Base lever
2) Push up the base tip and jog the base back and forth.
(Fig. 12)
Base
Fig. 9
Blade hole
Fig. 10
Fig. 11
Fig. 12
(3) You can adjust the base position in three stages. Move
the base at an interval of about 15 mm, find the
position where the base hooks, and press in the base
lever with your fingers. The base is secured when you
hear the clicking sound. (Fig. 13)
Base lever
8. Adjusting the blade reciprocating speed
This unit has a built-in electronic control circuit that
makes it possible to adjust the variable speed of the
saw blade either both by pulling a switching trigger
or turning a dial. (Fig. 14)
(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
Fig. 13
Switch trigger
Graduation
Dial
Fig. 14
Recommended
dial scale
2 – 4
5
1 – 3
2 – 4
4 – 5
1 – 3
4