Hitachi GC22EAD Trimmer User Manual


 
15
English
Airlter (Fig. 32)
The air 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 lter daily or more often if working in
exceptionally dusty areas.
28
Fig. 32
Cleaning the airlter
Open the air lter cover and the lter (28). Rinse it in
warm soap suds. Check that the lter is dry before
reassembly. An air lter that has been used for some
time cannot be cleaned completely. Therefore,
it must regularly be replaced with a new one. A
damaged lter must always be replaced.
Fuellter (Fig. 33)
Drain all fuel from fuel tank and pull fuel lter line
from tank. Pull 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.
Fig. 33
Spark plug (Fig. 34)
The spark plug condition is in uenced by:
An incorrect carburetor setting
Wrong fuel mixture (too much oil in the gasoline)
A dirty air lter
Hard running conditions (such as cold weather)
These factors cause deposits on the spark plug
electrodes, which may result in malfunction and
starting di culties. If the engine is low on power,
di cult to start or runs poorly at idling speed, always
check the spark plug 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
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 exible shaft, 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 o 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).