9. Maintenance
MA2
0.6~0.7mm
MA3
IMPORTANT
•Clogging of air filter reduces engine performances. Inside of an engine will quickly wear by dusts if an air cleaner cover is not correctly fitted or if a filter is missed, deformed, or damaged.
•Avoid dusts to penetrate into the engine when removing the air filter. Cover an air inlet with a cloth after removing the filter.
•To keep the engine performance, change the air filter at every 20 hours of operation.
■SPARK PLUG
WARNING
Do not touch the spark plug by bare hands immediately after stopping the engine. There is a danger of burn for its high temperature.
About every 25 hours of operation, remove the spark plug and clean contaminant on electrodes with a wire brush, etc.
Applicable gap between the electrodes is 0.6~0.7mm.
Use specified spark plug for exchange.
Specified Spark Plug:
NGK BPM8Y
IMPORTANT
Electrodes of the spark plug are contaminated by over sucking of fuel or by poor quality oil. This may cause the engine start difficult.
■FUEL FILTER
About every 25 hours of operation, remove a fuel filter from the fuel tank and remove adhered debris. In case the filter is clogged, exchange with a new one.
Care should be taken not to bend a fuel pipe when setting the filter back into the tank.
(1) Fuel filter
21
