Maruyama MD830, Owner'S/Operator'S Manual

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— 14 — English
SPARK PLUG
The spark plug should be removed from the engine and checked
after each fifty (50) hours of use. The tips can be cleaned with a
stiff brush. Adjust the gap to 0.031 - 0.035 inches (see sketch).
Replace the spark plug if it is oil-fouled or damaged.
CAUTION!
The correct torque for the spark plug is 10 - 12 ft. lbs. Do not over-
tighten.
FUEL FILTER
The fuel filter should be cleaned and inspected for damage after each twenty (20) hours of use.
The fuel filter is attached to the fuel pick-up tube inside the fuel tank. Loosen the clamp and take out
the fuel filter.
To clean the fuel filter, remove it from the fuel tube and wash it with safety solvent. Inspect and clean
the fuel tank before re-installing the fuel filter.
Always replace a defective fuel filter.
TIPS
PROPER GAP
0.031 - 0.035 IN.
FUEL TUBE
GROMMET
FUEL FILTER
CLAMP WEIGHT
FUEL FILTER
COOLING FINS
Free passage of air flow through the cylinder cooling fins is required to prevent poor engine
performance and shortened engine life. Regularly check and clean all debris from the cooling fins by
removing the engine cover (see sketch).
MUFFLER AND EXHAUST PORTS
The muffler should be removed and serviced after each one fifty (50) hours of use. At the same time,
the exhaust ports should be cleaned and inspected. An AUTHORIZED MARUYAMA DEALER should
be contacted for this service.
ENGINE COVER
COOLING FINS