Hitachi CS40EA - Инструкция по эксплуатации - Страница 12

11

English

LIMBING

Limbing is removing the branches from a feller tree.

WARNING

A majority of kickback accidents occur during Iimbing.

Do not use the nose of the guide bar. Be extremely cautious and 
avoid contacting the log, other limbs or objects with the nose 
of the guide bar. Be extremely cautious of limbs under tension. 
They can spring back towards you and cause loss of control 
resulting in injur y. (

Fig.

24

)

Stand on the left side of the trunk. Maintain a secure footing and 
rest the saw on the trunk. Hold the saw close to you so that you are 
in  full  control  of  it.  Keep  well  away  from  the  chain.  Move  only  when 
the trunk is between you and the chain. Watch out for spring back of 
limbs under tension.

LIMBING

THICK

BRANCHES

When limbing thick branches, the guide bar may get pinched easily. 
Branches under tension often snap up, so cut troublesome branches 
in small steps. Apply the same principles as for cross cutting. Think 
ahead and be aware of the possible consequences of all your 
actions.

CROSS

CUT TING/BUCKING

Before star ting to cut through the log, tr y to imagine what is going to 
happen. Look out for stresses in the log and cut through it in such a 
manner that the guide bar will not get pinched.

CROSS

CUT TING

LOGS,

PRESSURE

ON

TOP

Take a 

fi

 rm stance. Begin with an upper cut. Do not cut too deeply, 

about 1/3 of the log diameter is enough. Finish with a bottom cut. 
The saw cuts should meet. (

Fig.

25

)

24. Relieving cut
25. Cross cut
26.  Pressure on top
27. Pressure side
28. Tension side
29.  Relative depth of saw cuts

THICK

LOG,

L ARGER

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

CUT TING

LOGS,

PRESSURE

ON

BOT TOM

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

)

30. Relieving cut
31. Cross cut
32.  Pressure on bottom
33. Tension side
34. Pressure side
35.  Relative depth of saw cuts

THICK

LOG,

L ARGER

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 tr y 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, REPL ACEMENT 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 star t the engine without the complete clutch cover. 

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 factor y, the carburetor is adjusted. A fur ther 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 star ts 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 star ts 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 (36) must be cleaned from dust and dir t in order to avoid:

○

 Carburetor 

malfunctions.

○

 Star ting 

problems.

○

  Engine power reduction.

○

  Unnecessar y wear on the engine par ts.

○

  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 (37) and the 

fi

 lter (36).

Rinse them in warm soap suds. Check that the 

fi

 lter is dr y 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 in

fl

 uenced by:

○

  An incorrect carburetor setting.

○

  Wrong fuel mixture (too much oil in the gasoline)

○

  A dir ty 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 star ting di

ffi

  culties. If the engine is 

low on power, di

ffi

  cult to star t or runs poorly at idling speed, always 

check the spark plug 

fi

 rst. If the spark plug is dir ty, clean it and check 

the electrode gap. Readjust if necessar y. 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 por t (38) whenever possible.

000Book̲CS40EA̲EE.indb   11

000Book̲CS40EA̲EE.indb   11

2010/09/03   14:50:32

2010/09/03   14:50:32