Bedienungsanleitung Hitachi CR 13 VA (Seite 9 von 54) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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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. 13, Fig. 14)

(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. 13)

(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. 14)

You can cut efficiently by swing cutting, mounting

the saw blade in whichever direction, upward or

downward.

CAUTION

⅜ Even for soft materials, you should perform straight

cutting if you wish to make curved or clean cuts.

⅜ 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

⅜ Avoid carrying it plugged to the outlet with your

finger on the switch. A sudden startup can result

in an unexpected injury.

⅜ 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.

⅜ Do not remove the front cover (refer to Fig. 1).

Be sure to hold the body from the top of the front

cover.

⅜ 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.

⅜ 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. 15 and

Fig. 17).

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. 16, Fig. 18)

⅜ To maximize cutting efficiency for the materials you

are using and working conditions, adjust the speed

of the saw blade and the switching to swing cutting.

1. Cutting metallic materials

CAUTION

⅜ Press the base firmly against the workpiece.

⅜ Never apply any unreasonable force to the saw

blade when cutting. Doing so can easily break the

blade.

(1) Fasten a workpiece firmly before operation. (Fig. 19)

(2) When cutting metallic materials, use proper machine

oil (turbine oil, etc.). When not using liquid machine

oil, apply grease over the workpiece.

CAUTION

The service life of the saw blade will be drastically

shortened if you don’t use machine oil.

(3) Use the dial to adjust the speed of the saw blade

to suit your working conditions and materials.

(4) You can cut smoothly if you set the change lever

position to straight cutting (Fig. 13).

2. Cutting lumber

(1) When cutting lumber, make sure that the workpiece

is fastened firmly before beginning. (Fig. 20)

(2) You can cut efficiently if the speed of the saw blade

is set to dial scale “5”.

(3) You can cut efficiently if the change lever position

is set to swing cutting (Fig. 14). Alternatively, you

can cut cleanly if the change lever position is set

to straight cutting (Fig. 13).

CAUTION

⅜ Never apply any unreasonable force to the saw

blade when cutting. Also remember to press the

base against the lumber firmly.

3. Sawing curved lines

We recommend that you use the BI-METAL blade

mentioned in Table 2 for the saw blade since it is

tough and hardly breaks.

CAUTION

Delay the feed speed when cutting the material into

small circular arcs. An unreasonably fast feed may

break the blade.

4. Plunge cutting

With this tool, you can perform plunge cutting on

plywood panels and thin board materials. You can

carry out pocket cutting quite easily with the saw

blade installed in reverse as illustrated in Fig. 22,

Fig. 24, and Fig. 26. Use the saw blade that is as

short and thick as possible. We recommend for this

purpose that you use BI-METAL Blade No. 132

mentioned in Table 2. Be sure to use caution during

the cutting operation and observe the following

procedures.

(1) Press the lower part (or the upper part) of the base

against the material. Pull the switch trigger while

keeping the tip of the saw blade apart from the

material. (Fig. 21, Fig. 22)

(2) Raise the handle slowly and cut in with the saw

blade little by little. (Fig. 23, Fig. 24)

(3) Hold the body firmly until the saw blade completely

cuts into the material. (Fig. 25, Fig. 26)

CAUTION

⅜ Avoid plunge cutting for metallic materials. This can

easily damage the blade.

⅜ Never pull the switch trigger while the tip of the

saw blade tip is pressed against the material. If you

do so, the blade can easily be damaged when it

collides with the material.

⅜ Make absolutely sure that you cut slowly while

holding the body firmly. If you apply any

unreasonable force to the saw blade during the

cutting operation, the blade can easily be damaged.

Hitachi CR 13 VA Seite 9

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