Hitachi CG25EUS - Инструкция по эксплуатации - Страница 13

12

English

Cleaning

the

air

 fi 

lter

Remove the air 

fi

 lter cover and the 

fi

 lter (21). Rinse it 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.

Fuel

 fi 

lter

 (

Fig.

28

)

Drain all fuel from fuel tank and pull fuel 

fi

 lter line from tank. Pull 

fi

 lter element out of holder assembly and rinse element in warm 

water with detergent.

Rinse thoroughly until all traces of detergent are eliminated. 
Squeeze, do not wring, away excess water and allow element to air 
dr y.

NOTE

If element is hard due to excessive dir t buildup, replace it.

Spark

plug

 (

Fig.

29

)

The spark plug condition is in

fl

 uenced by:

○

  An incorrect carburetor setting

○

  A dir ty air 

fi

 lter

○

  Hard running conditions (such as cold weather)

○

  Too much engine oil

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. Re-adjust 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.

Semi-auto

cutting

head

Nylon

line

replacement

(1)  Remove the case (24) by 

fi

 rmly pushing inward the locking tabs 

with your thumbs as shown in 

Fig.

31

.

(2)  After removing the case, take out the reel and discard the 

remaining line.

(3)  Fold the new nylon line unevenly in half as shown in picture.
 

Hook the U-shaped end of the nylon line into the groove (25) on 
the center par tition of the reel.

Wind  both  halves  of  the  line  on  the  reel  in  the  same  direction, 
keeping each half of the line on its own side of the par tition. 
(

Fig.

32

)

(4)  Push each line into the stopper holes (26), leaving the loose 

ends approx. 10 cm in length. (

Fig.

33

) 

(5)  Inser t both loose ends of the line through the cord guide (27) 

when placing the reel in the case. (

Fig.

34

)

NOTE

When placing a reel in the case, tr y to line up the stopper holes 
(26) with the cord guide (27) for easier line release later.

(6)  Place the cover over the case so that the cap locking tabs on 

the case meet the long holes on the cover. Then push the case 
securely until it clicks into place. (

Fig.

35

)

(7)  The initial cutting line length should be approx. 11

–

14 cm and 

should be equal on both sides. (

Fig.

36

)

Blade

 (

Fig.

30

)

WARNING

  Wear protective gloves when handling or per forming 

maintenance on the blade.

○

  Use a sharp blade. A dull blade is more likely to snag and thrust. 

Replace the fastening nut if it is damaged and hard to tighten.

○

  When replacing blade, purchase one recommended by Hitachi, 

with a 25.4 mm (one inch) 

fi

 tting hole.

○

  When installing a saw blade (23), always face the stamped side 

up. In the case of a 3 or 4 tooth blade (22), it can be used on 
either side.

○

  Use the correct blade for the type of work.

○

  When replacing blades, use appropriate tools.

○

  When cutting edges become dull, re-sharpen or 

fi

 le as shown 

in the illustration. Incorrect sharpening may cause excessive 
vibration.

○

  Discard blades that are bent, warped, cracked, broken or 

damaged in any way.

NOTE

When  sharpening  blade  it  is  impor tant  to  maintain  an  original 
shape of radius at the base of the tooth to avoid cracking.

Maintenance

schedule

Below you will 

fi

 nd some general maintenance instructions. For 

fur ther information please contact your Hitachi dealer.

Daily

maintenance

○

  Clean the exterior of the unit.

○

  Check that the harness is undamaged.

○

  Check the blade guard for damage or cracks. Change the guard 

in case of impacts or cracks.

○

  Check that the cutting attachment is properly centred, sharp, 

and without cracks. An o

ff

 -centre cutting attachment induces 

heav y vibrations that may damage the unit.

○

  Check that the cutting attachment nut is su

ffi

  ciently tightened.

○

  Make sure that the blade transpor t guard is undamaged and 

that it can be securely 

fi

 tted.

○

  Check that nuts and screws are su

ffi

  ciently tightened.

○

  Check the volume and condition of the engine oil.

Weekly

maintenance

○

  Check the star ter, especially the cord and return spring.

○

  Clean the exterior of the spark plug.

○

  Remove it and check the electrode gap. Adjust it to 0.6 mm, or 

change the spark plug.

○

  Clean the air 

fi

 lter.

Monthly

maintenance

○

  Rinse the fuel tank with gasoline.

○

  Clean the exterior of the carburetor and the space around it.

○

  Clean the fan and the space around it.

000Book̲CG25EUS̲EE.indb   12

000Book̲CG25EUS̲EE.indb   12

2009/12/26   9:26:20

2009/12/26   9:26:20