Air Filter; Fuel Filter; Spark Plug; Flexible Drive Shaft - Hitachi CG22EAB Instruction Manual

I English
Air filter (Fig, 32)
The air filter must be cleaned from dust and dirt in
order to avoid:
O Carburetor malfunctions
O Starting problems
O Engine power reduction
O Unnecessary wear on the engine parts
O Abnormal fuel consumption
Clean the air filter daily or more often if working in
exceptionally dusty areas.
Fig. 32
Cleaning the air filter
Open the air filter cover and the filter (28). Rinse it in
warm soap suds. Check that the filter is dry before
reassembly. An air filter that has been used for some
time cannot be cleaned completely. Therefore,
it must regularly be replaced with a new one. A
damaged filter must always be replaced.
Fuel filter (Fig. 33)
Drain all fuel from fuel tank and pull fuel filter line
from tank. Pull filter 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.
Fig. 33
Spark plug (Fig. 34)
The spark plug condition is influenced by:
O An incorrect carburetor setting
O Wrong fuel mixture (too much oil in the gasoline)
O A dirty air filter
O Hard running conditions (such as cold weather)
These factors cause deposits on the spark plug
electrodes, which may result in malfunction and
starting difficulties. If the engine is low on power,
difficult to start or runs poorly at idling speed, always
check the spark plug first. 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 rnrn) _
Fig. 34
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.
Flexible drive shaft (Fig. 35)
Flexible drive shaft should be removed and
lubricated with good quality lithium grease every
20 hours. To remove the flexible shaft, first 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).
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