(FIG. 5-2)
REMOVE CARBON
0.6mm
11
MAINTENANCE INSTRUCTIONS
3. SPARK PLUG
(Fig. 5-2)
1. Use only recommended type of spark plug.
2. In best operating condition, electrodes on the spark plug are dark brown.
Keep spark plugs dry. If the spark plug is dirty, clean it and check electrode gap.
If readjustment is necessary, the correct gap is 0.6mm.
The spark plug condition is influenced by the following factors:
• An incorrect carburetor setting.
• Wrong fuel mixture (too much oil in gasoline).
• A dirty air filter.
• Hard running conditions (cold weather operations).
The spark plug should be replaced after 100 operation hours or earlier if the electrodes
are badly eroded.
4. AIR FILTER
(FIG. 5-3)
1. When the air filter gets dirty and closed with dust, it will cause various troubles:
• Carburetor malfunctions.
• Starting problems.
• Engine power reduction.
• Unnecessary wear on engine parts.
• Abnormal fuel consumption.
2. Cleaning the air filter
Air filter must be cleaned from dust and dirt regularly and
damaged filter must be replaced with a new one.
• Remove the air filter cover and the filter.
• Rinse it in warm soapy water and wring tight. Let dry
before re-assembly.
• Damaged air filter must be replaced with a new one.
5. FUEL FILTER
(Fig. 5-4)
1. If fuel filter is clogged with impurities in the fuel, fuel will
not flow into carburetor and it will make the engine
malfunction. Regular check-ups is recommended.
• Drain all fuel from fuel tank and pull out 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, but do not wring and let dry.
• If element is too dirty, replace.
6. MUFFLER
(Fig. 5-5)
1. Engine power reduction might be caused by carbon
accumulation around the exhaust port on cylinder,
muffler inlet or outlet in the long use. Regular
clean-up is recommended.
• Remove the muffler and clean up any excess
carbon from the exhaust port or muffler inlet
every 100 hours of operation.
• When cleaning up, remove carbon carefully to not
damage piston. cylinder and do not let carbon into
crank case.
(FIG. 5-3)
AIR FILTER
(Cleaner Sponge)
(FIG. 5-4)
(FIG. 5-5)
