Hitachi CS 33EB Instruction Manual page 16

English I
If you are not familiar with this type of adjustment,
please ask for assistance from your HITACHI dealer.
Air filter (Fig, 28)
The air filter (34) 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.
Cleaning the air filter
Remove the air filter cover (35) and the filter (34).
Fig. 28
Rinse them 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.
Spark plug (Fig, 29)
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. Readjust 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 " J
(0.6 mm)_
Fig. 29
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.
Oiler port (Fig. 30)
Clean the chain oiler port (36) whenever possible.
36
Fig. 30
Guide bar (Fig, 31)
Before using the machine, clean the groove and oiler
port (37) in the bar with the special gauge offered as
an optional accessory.
37
Fig. 31
Side case (Fig, 32)
Always keep the side case and drive area clean of
saw dust and debris. Periodically apply oil or grease
to this area to protect from corrosion as some trees
contain high levels of acid.
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