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CJ120VA
Инструкция по эксплуатации Страница: 9

Hitachi CJ120VA [9/58] English

English

circuit which enables stepless speed control. To adjust

the speed, turn the dial shown in Fig. 4. When the dial

is set to “1”, the jig saw operates at the minimum

speed (850min

–1

). When the dial set to “5”, the jig saw

operates at the maximum speed (3000min

–1

). Adjust

the speed according to the material to be cut and

working efficiency.

CAUTION

At low speed (dial setting: 1 or 2) do not cut a wood

with a thickness of more than 10 mm or metal with a

thickness of more than 1 mm.

7. Adjusting the orbital operation

(1) This Jig Saw employs orbital operation which moves

the blade back and forth, as well as up and down. Set

the change knob shown in Fig. 5 to “0” to eliminate

the orbital operation (the blade moves only up and

down). The orbital operation can be selected in 4 steps

from “0” to “III”.

(2)

For the hard material, such as a steel plate, etc.,

decrease the orbital operation. For the soft material,

such as lumber, plastic, etc., increase the orbital

operation to increase work efficiency. To cut the

material accurately, decrease the orbital operation.

8. Cutting stainless steel plates

This Jig Saw can cut stainless steel plates by using

No. 97 blade. Carefully read “Concerning cutting of

stainless steel plates” for proper operation.

9. Splinter guard

Using the splinter guard when cutting wood materials

will reduce splintering of cut surfaces.

Insert the splinter guard in the space on the base, and

push it completely. (see Fig. 6)

10. Chip cover

Chip cover prevents chips from flying off and

improves the efficiency of dust collector.

Insert the chip cover between the base and lever, and

push with a slight pressure until it catches in place.

(Fig. 7)

When removing chip cover, hold both sides of knob

and slightly open until it can be removed from the Jig

Saw. (Fig. 8)

NOTE:

There is a possibility that chip cover is frosted when

cutting the metal.

11. Sub base

Using the sub base (made from steel) will reduce

abrasion of aluminium base especially in cutting

metals.

Using the sub base (made from resin) will reduce

scratching of cut surface. Attach the sub base to the

bottom surface of base by attached 4 screws.

CUTTING

CAUTIONS

䡬 In order to prevent blade dislodging, damage or

excessive wear on the Plunger, please make sure to

have surface of the base plate attached to the work

piece while sawing.

1. Rectilinear cutting

When cutting on a straight line, first draw a marking

gauge line and advance the saw along that line. Using

the guide (sold separately) will make it possible to

cut accurately on a straight line.

(1) Loosen the base bolt hexagonal bar wrench attached

on base. (Fig. 9)

(2) Move the base fully forward (Fig. 10), and tighten the

base bolt again.

(3) Attach the guide by passing it through the attachment

hole on the base and tighten the M5 bolt. (Fig. 11)

(4) Set the orbital position to “0”.

NOTE:

To ensure accurate cutting when using the Guide

(Fig.11), always set the orbital position to “0”.

2. Sawing curved lines

When sawing a small circular arc, reduce the feeding

speed of the machine. If the machine is fed too fast, it

could cause the blade to break.

3. Cutting a circle or a circular arc

The guide also will be helpful for circular cutting.

After attaching the guide by same way noted as above,

drive the nail or screw into the material through the

hole on the guide, then use it for a axis when cutting.

(Fig. 12)

NOTE:

Circular cutting must be done with the blade

approximately vertical to the bottom surface of the

base.

4. Cutting metallic materials

(1) Adjust the speed Dial between scales “3” and “4”.

(2) Set the orbital position to “0” or “I”.

(3) Always use an appropriate cutting fluid (spindle oil,

soapy water, etc.). When a liquid cutting fluid is not

available, apply grease to the back surface of the

material to be cut.

5. Pocket cutting

(1) In lumber

Aligning the blade direction with the grain of the

wood, cut step by step until a window hole is cut in

the center of the lumber. (Fig. 13)

(2) In other materials

When cutting a window hole in materials other than

lumber, initially bore a hole with a drill or similar tool

from which to start cutting.

6. Angular cutting

The base can be swiveled to both sides by up to 45°

for angular cutting. (Fig. 14)

(1) Loosen the base bolt by hexagonal bar wrench

attached on base and move the base fully forward.

(Fig. 9, 10)

(2) Align the scale (from 0 degrees to 45 degrees by 15-

degree increments) of the semi-circular part of the

base with the [

] mark on the gear cover. (Fig. 15)

(3) Tighten the M5 bolt again. (Fig. 9)

(4) Set the orbital position to “0”.

NOTE:

Angular cutting can not be done when adopting chip

cover or dust collector.

CONCERNING CUTTING OF STAINLESS STEEL

PLATES

CAUTION

In order to prevent blade dislodging, damage or excessive

wear on the Plunger, please make sure to have surface

of the base plate attached to the work piece while sawing.

When cutting stainless steel plates, adjust the unit as

described below:

Hitachi CJ120VA [9/58] English

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