Hitachi CG 22EAS Manual De Usuario

15

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.

28

Fig. 32

Open the air fi lter cover and the fi lter (28). 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.

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.

  If element is hard due to excessive dirt buildup, 

replace it.

Fig. 33

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 0.024˝ (0.6 mm). 

The spark plug should be replaced after about 100 

operation hours or earlier if the electrodes are badly 

eroded.

0.024˝
(0.6 mm)

Fig. 34

  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.

Flexible drive shaft should be removed and 

lubricated with good quality lithium grease every 

20 hours. To remove the fl exible shaft, fi rst remove 

screw (29), loosen bolt (30) and remove the gear 

case then pull the shaft out of the drive shaft pipe. 

Clean the shaft off  and apply a generous coat of 

lithium grease to it and insert if back into the drive 

shaft pipe, turn it unit it drops into place then install 

the gear case, install & tighten screw (29) and screw 

(30).

000Book_CG22EAS_US.indb   15

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2010/01/14   9:49:39

2010/01/14   9:49:39