Hitachi CS33ET Instruction Manual page 13

Air filter (Fig, 29)
The air filter (40), (43) and cleaner sponge (41), (42) 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 filter daily or more often if working in exceptionally
dusty areas.
(For CS33ET)
Remove the air filter cover (39), air filter (40) and the cleaner sponge
(41), (42).
NOTE!
When removing the air filter (40) from the unit, turn the air filter
1/8th counter-clockwise (CS33ET)
(For CS33EA)
Remove the air filter cover (39) and pull the tab (46) on the air filter
(43).
NOTE!
When installing the air filter (43) on the unit, please take the
following steps:
1. Set the hole (45) on the air filter to the boss (46) first.
2. Fit the installing hole (47) on the air filter on the part (48) on the
rear handle. Push the air filter down till you hear the click.
Cleaning the air filter
Remove the air filter cover (39) and the filter (40), (43).
O 41 39
I
Spark plug (Fig. 30)
The spark plug condition is influenced by:
An incorrect carburetor setting.
Wrong fuel mixture (too much oil in the gasoline)
A dirty air filter.
Hard running conditions (such as cold weather).
English
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.
Fig. 30
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, 31)
Clean the chain oiler port (49) whenever possible.
49
/
CS33EA
48
Fig. 29
NOTE!
When removing the filter from the unit, turn the filter 1/8 turn to
counter-clockwise.
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.
Fig. 31
Guide bar (Fig. 32)
Before using the machine, clean the groove and oiler port (50) in
the bar with the special gauge offered as an optional accessory.
5O
Fig. 32
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