Troubleshooting
Problem
Engine will not start
Engine lacks power or dropped
down when blowing.
If further assistance is required, contact your local authorized MARUYAMA service dealer.
Maintenance Period
Check and replenish fuel
Check for fuel leakage
Check bolts, nuts and screws for tightness or missing
Check engine idle speed adjustment
■
Clean air filter element
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Remove dust and dirt from engine screen
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Remove dust and dirt from air intake screen
Tighten bolts and nuts
Clean spark plug and adjust electrode gap
■
Remove dust and dirt from cylinder fins
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Remove carbon deposits in exhaust port
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Clean spark arrester
Replace fuel filter
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Remove carbon deposits on piston head and combustion chamber
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Remove carbon deposits in transfer ports
Replace fuel tube, fuel tank cap gasket
●: Service to be performed by an authorized MARUYAMA engine dealer.
■: Service more frequently under dusty conditions.
NOTE:
The service intervals indicated are to be used as a guide.
Service to be performed more frequently as necessary depending on operating condition.
Use MARUYAMA standard 50:1 two-stroke engine oil.
Cause
STOP switch set to off position
Empty fuel tank
Primer bulb wasn't pushed enough
Engine flooded
Dirty air filter
Clogged spark arrester or exhaust port.
Blower pipes clogged, loose or damaged.
Maintenance
US- 20 -
Action
Move switch to on position
Fill fuel tank
Press primer bulb until fuel flows
through fuel return line
Use warm engine starting procedure
Clean or replace air filter
Clean spark arrester or exhaust port.
Unclog or tighten or replace
Every
Daily
20 hours
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It is recommended to replace every 3 years
Every
Every
50 hours
100 hours
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