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Hitachi CG22EJ-SLN Manual

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8
English
Air fi lter (Fig. 8)
The air fi lter 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 and the fi lter (10). Rinse it 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.
Fuel fi lter (Fig. 9)
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 dry.
NOTE
If element is hard due to excessive dirt buildup, replace it.
Spark plug (Fig. 10)
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. Re-adjust 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.
Muffl er (Fig. 11)
Remove the muffl er and clean out any excess carbon from the exhaust
port or muffl er inlet every 100 hours of operation.
Cylinder (Engine cooling) (Fig. 12)
The engine is air cooled, and air must circulate freely around engine
and over cooling fi ns on cylinder head to prevent overheating.
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.
NOTE
Do not operate engine with engine shroud or muffl er guard
removed as this will cause overheating and engine damage.
Maintenance schedule
Below you will fi nd some general maintenance instructions. For further
information please contact your Hitachi dealer.
Daily maintenance
○ Clean the exterior of the unit.
○ Check that the harness is undamaged.
○ Check that nuts and screws are suffi ciently tightened.
Weekly maintenance
○ Check the starter, 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 cooling fi ns on the cylinder and check that the air intake
at the starter is not clogged.
○ 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.
000Book_CG22EJ(SLN).indb 8000Book_CG22EJ(SLN).indb 8 2012/06/21 15:30:192012/06/21 15:30:19
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