Hitachi CG25EUS - Инструкция по эксплуатации - Страница 12

11

English

NOTE

If engine does not star t, repeat procedures from 2 to 4.

5.  After star ting engine, then allow the engine about 2

–

3 minutes 

to warm up before subjecting it to any load.

Cutting

 (

Fig.

19,

20,

21

)

○

  When cutting, operate engine at over 6500 rpm. Extended time 

of use at low rpm may wear out the clutch prematurely.

○

  Cut grass from right to left.

○

  Blade thrust may occur when the spinning blade contacts a 

solid object in the critical area.

A dangerous reaction may occur causing the entire unit and 
operator to be thrust violently. This reaction is called blade 
thrust. As a result, the operator may lose control of the unit 
which may cause serious or fatal injur y. Blade thrust is more 
likely to occur in areas where it is di

ffi

  cult to see the material to 

be cut.

○

  Wear the harness as shown in the 

fi

 gure (if so equipped). The 

blade turns counter-clockwise, therefore, be advised to operate 
the unit from right to left for e

ffi

  cient cutting. Keep onlookers out 

of working area at least 15 m.

NOTE

Press the quick release button or pull emergency release 

fl

 ap 

(If so equipped) in the event of emergency.

WARNING

If  cutting  attachment  should  strike  against  stones  or  other 
debris, stop the engine and make sure that the attachment and 
related par ts are undamaged. When grass or vines wrap around 
attachment, stop engine and attachment and remove them.

Stopping

 (

Fig.

22

)

Decrease engine speed and run at an idle for a few minutes, then 
turn o

ff

   ignition switch.

WARNING

A cutting attachment can injure while it continues to spin after 
the engine is stopped or power control is released. When the 
unit is turned o

ff

 , make sure the cutting attachment has stopped 

before the unit is set down.

Semi-auto

cutting

head

6.  Adjusting line length

○

  Set the engine speed as low as possible and tap the head on 

the ground. The nylon line will be drawn out about 3 cm with 
each tap. (

Fig.

23

)

Also, you can extend the nylon line by hand but the engine must 
be completely stopped. (

Fig.

24

) 

○

  Adjust the nylon line to the proper length of 11

–

14 cm before 

each operation.

MAINTENANCE

MAINTENANCE, REPL ACEMENT OR REPAIR OF THE EMISSION 
CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED 
BY ANY NON-ROAD ENGINE REPAIR ESTABLISHMENT OR 
INDIVIDUAL.

Carburetor

adjustment

 (

Fig.

25

)

WARNING

○

  The cutting attachment may be spinning during carburetor 

adjustments.

○

  Never star t the engine without the complete fan case and tube 

assembled! Other wise 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 basically 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 your Hitachi dealer.

NOTE

○

  Standard Idle rpm is 3000 rpm.

○

  Some models sold 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.

WARNING

When the engine is idling the cutting attachment must under no 
circumstances rotate.

Changing

the

engine

oil

Dir ty engine oil will considerably reduce the ser vice life of the 
engine. Check and change the engine oil regularly.

CAUTION

○

  To avoid the risk of burn injuries, allow the engine to cool 

thoroughly before changing the engine oil.

○

  To  prevent  breakdown,  ensure  that  no  sand  or  dir t  gets  into  the 

tank while refueling.

When to change the oil: When 

fi

rst using the unit, after 

approximately 10 hours of operation or after 1 month, whichever 
occurs earlier; subsequently, after ever y 50 hours of operation or 
ever y 6 months, whichever occurs earlier.
Speci

fi

 ed engine oil: Multigrade oil of classi

fi

 cation SAE 10W-30

Engine oil capacity: 80 ml

1. Turn 

o

ff

  the ignition switch.

2.  Check that the fuel cap is securely tightened.
3.  Remove the oil cap, tilt the unit so that the oil tank opening is on 

the underside and drain the engine oil into a container. (

Fig.

26

)

4.  When all the engine oil has been drained, place the unit 

horizontally on a clean, 

fl

 at sur face.

5.  Fill the oil tank with engine oil up to the mouth of the oil tank 

opening. (

Fig.

15

)

6.  Tighten the oil cap securely by hand.

NOTE

○

  Do not dispose of waste engine oil with garbage or into the 

ground.

Dispose of the oil according to the speci

fi

 ed  method  in  your 

area.

If you are unsure, contact the retailer where the oil was 
purchased.

○

  Fill the oil tank with the speci

fi

 ed amount of engine oil.

Too much or too little engine oil may result in engine 
breakdown.

○

  Engine oil deteriorates naturally even if unused.

Change the engine oil regularly.

Air

 fi 

lter

 (

Fig.

27

)

The air 

fi

 lter 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.

000Book̲CG25EUS̲EE.indb   11

000Book̲CG25EUS̲EE.indb   11

2009/12/26   9:26:20

2009/12/26   9:26:20