Hitachi CS 33EDT Instruction Manual page 12

English
Spark plug (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. 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"(0.6 mm)
0.6 mm
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. 34)
Clean the chain oiler port (39) whenever possible.
Guide bar (Fig. 35)
Before using the machine, clean the groove and oiler port (40) in the
bar with the special gauge off ered as an optional accessory.
12
38
37
36
35
Fig. 32
Fig. 33
39
Fig. 34
Side case (Fig. 36)
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.
Fuel fi lter (Fig. 37)
Remove the fuel fi lter from the fuel tank and thoroughly wash it in
solvent. After that, push the fi lter into the tank completely.
NOTE
If the fi lter is hard due to dust and dirt, replace it.
Chain oil fi lter (Fig. 38)
Remove the oil fi lter and thoroughly wash it in solvent.
After that, push the fi lter into the tank completely.
40
39
Fig. 35
Fig. 36
Fig. 37
Fig. 38