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Инструкция по эксплуатации Страница: 13

Hitachi CS33EDT [13/116] English

English

THICK LOG, LARGER THAN GUIDE BAR LENGTH

Begin by cutting on the opposite side of the log. Pull the saw towards

you, followed by previous procedure. (Fig. 26)

If the log is lying on the ground make a boring cut to avoid cutting into

the ground. Finish with a bottom cut. (Fig. 27)

WARNING

KICKBACK DANGER

Do not attempt a boring cut if you are not properly trained. A

boring cut involves the use of the nose of the guide bar and can

result in kickback.

CROSS CUTTING LOGS, PRESSURE ON BOTTOM

Take a ﬁ rm stance. Begin with a bottom cut. The depth of the cut

should be about 1/3 of the log diameter.

Finish with an upper cut. The saw cuts should meet. (Fig. 28)

29. Relieving cut

30. Cross cut

31. Pressure on bottom

32. Tension side

33. Pressure side

34. Relative depth of saw cuts

THICK LOG, LARGER THAN GUIDE BAR LENGTH

Begin by cutting on the opposite side of the log. Pull the saw towards

you, followed by previous procedure. Make a boring cut if the log is

close to the ground. Finish with a top cut. (Fig. 29)

WARNING

KICKBACK DANGER

Do not attempt a boring cut if you are not properly trained. A

boring cut involves the use of the nose of the guide bar and can

result in kickback. (Fig. 30)

IF THE SAW GETS STUCK

Stop the engine. Raise the log or change its position, using a thick branch

or pole as a lever. Do not try to pull the saw free. If you do, you can deform

the handle or be injured by the saw chain if the saw is suddenly released.

MAINTENANCE

MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION

CONTROL DEVICES AND SYSTEM MAY BE PERFORMED BY ANY

NON-ROAD ENGINE REPAIR ESTABLISHMENT OR INDIVIDUAL.

Carburetor adjustment (Fig. 31)

WARNING

Never start the engine without the complete side case.

Otherwise the clutch can come loose and cause personal injuries.

In the carburetor, fuel is mixed with air. When the engine is test run at

the factory, the carburetor is adjusted. A further adjustment may be

required, according to climate and altitude. The carburetor has one

adjustment possibility:

T = Idle speed adjustment screw.

Idle speed adjustment (T)

Check that the air ﬁ lter is clean. When the idle speed is correct, the

cutting attachment will not rotate. If adjustment is required, close

(clockwise) the T-screw, with the engine running, until the cutting

attachment starts to rotate. Open (counter-clockwise) the screw

until the cutting attachment stops. You have reached the correct idle

speed when the engine runs smoothly in all positions well below the

rpm when the cutting attachment starts to rotate.

If the cutting attachment still rotates after idle speed adjustment,

contact HITACHI dealer.

WARNING

When the engine is idling the cutting attachment must under no

circumstances rotate.

NOTE

Some models sold in areas with strict exhaust emission

regulation do not have high and low speed carburetor

adjustments. Such adjustments may allow the engine to be

operated outside of their emission compliance limits. For these

models, the only carburetor adjustment is idle speed.

If you are not familiar with this type of adjustment, please ask for

assistance from your HITACHI dealer.

Air ﬁ lter (Fig. 32)

The air ﬁ lter (37) and cleaner sponge (36), (38) must be cleaned from

dust and dirt in order to avoid:

○ Carburetor malfunctions.

○ Starting problems.

○ Engine power reduction.

○ Unnecessary wear on the engine parts.

○ Abnormal fuel consumption.

Clean the air ﬁ lter daily or more often if working in exceptionally

dusty areas.

Cleaning the air ﬁ lter

Remove the air ﬁ lter cover (35) and the cleaner sponge (36). Turn the

air ﬁ lter (37) 20° counter-clockwise and remove. Then remove the

cleaner sponge (38).

Rinse them in warm soap suds. Check that the ﬁ lter is dry before

reassembly. An air ﬁ lter that has been used for some time cannot be

cleaned completely. Therefore, it must regularly be replaced with a

new one. A damaged ﬁ lter must always be replaced.

Spark plug (Fig. 33)

The spark plug condition is inﬂ uenced by:

○ An incorrect carburetor setting.

○ Wrong fuel mixture (too much oil in the gasoline)

○ A dirty air ﬁ lter.

○ Hard running conditions (such as cold weather).

These factors cause deposits on the spark plug electrodes, which

may result in malfunction and starting diﬃ culties. If the engine is

low on power, diﬃ cult to start or runs poorly at idling speed, always

check the spark plug ﬁ rst. If the spark plug is dirty, clean it and check

the electrode gap. Readjust if necessary. The correct gap is 0.6 mm.

The spark plug should be replaced after about 100 operation hours

or earlier if the electrodes are badly eroded.

NOTE

In some areas, local law requires using a resistor spark plug to

suppress ignition signals. If this machine was originally equipped

with resistor spark plug, use same type of spark plug for replacement.

Oiler port (Fig. 34)

Clean the chain oiler port (39) whenever possible.

Guide bar (Fig. 35)

Before using the machine, clean the groove and oiler port (40) in the

bar with the special gauge oﬀ ered as an optional accessory.

Side case (Fig. 36)

Always keep the side case and drive area clean of saw dust and

debris. Periodically apply oil or grease to this area to protect from

corrosion as some trees contain high levels of acid.

Fuel ﬁ lter (Fig. 37)

Remove the fuel ﬁ lter from the fuel tank and thoroughly wash it in

solvent. After that, push the ﬁ lter into the tank completely.

NOTE

If the ﬁ lter is hard due to dust and dirt, replace it.

Chain oil ﬁ lter (Fig. 38)

Remove the oil ﬁ lter and thoroughly wash it in solvent.

After that, push the ﬁ lter into the tank completely.

NOTE

If the ﬁ lter is hard due to dust and dirt, replace it.

For long-term storage

Drain all fuel from the fuel tank. Start and let engine run until it stops.

Repair any damage which has resulted from use. Clean the unit with

a clean rag, or the use of high pressure air hose. Put a few drops of

two-cycle engine oil into the cylinder through the spark plug hole,

and spin the engine over several times to distribute oil.

Cover the unit and store it in a dry area.

CHAIN SHARPENING

Parts of a cutter (Fig. 39, 40)

WARNING

○ Gloves should be used when sharpening chain.

○ Be sure to round oﬀ the front edge to reduce the chance of

kickback or tie-strap breakage.

000Book_CS33EDT_EE.indb 13000Book_CS33EDT_EE.indb 13 2011/08/06 8:57:192011/08/06 8:57:19

Hitachi CS33EDT [13/116] English

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