Hitachi CH 50EA3 (ST)/CH 55EB3 (ST) Manual De Usuario

9

 

Lubrication should be applied at 20 hour intervals and more 

frequently with heavy use.

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.

Fig. 15

 If 

the 

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

When leaves get caught between cylinder fi ns (8), the engine may 

overheat, resulting in lower output. To avoid this, always keep 

cylinder fi ns and fan case clean.

Every 100 operating hours, or once a year (more often if conditions 

require), clean fi ns and external surfaces of engine of dust, dirt and 

oil deposits which can contribute to improper cooling.

8

Fig. 16

Remove the muffl  er and spark arrestor (if so equipped), and clean 

out any excess carbon from the exhaust port or muffl  er inlet every 

100 hours of operation.

Fig. 17

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 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.

Below you will fi nd some general maintenance instructions. For 

further information please contact your Hitachi dealer.

○  Clean the exterior of the hedge trimmer.

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

in case of impacts or cracks.

○  Check that the blade is sharp, and without cracks.

○  Check that the blade nut is suffi  ciently tightened.

○  Make sure that the blade transport guard is undamaged and 

that it can be securely fi tted.

○  Check that nuts and screws are suffi  ciently tightened.

○  Check the starter, especially 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 cooling fi ns on the cylinder and check that the air 

intake at the starter is not clogged.

○  Check gear case is fi lled with grease.

○  Clean the air fi lter.

○  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.

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2009/12/21   17:35:38

2009/12/21   17:35:38