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Troubleshooting
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: Service to be performed by an authorized MARUYAMA engine dealer.
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: 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.
If further assistance is required, contact your local authorized MARUYAMA service dealer.
Maintenance Period
Maintenance
Daily
Every
25 hours
Every
50 hours
Every
100 hours
Check and replenish fuel
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Check for fuel leakage
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Check bolts, nuts and screws for tightness or missing
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Check engine idle speed adjustment
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Clean air filter element
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Clean spark plug and adjust electrode gap
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Remove dust and dirt from cylinder fins
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Clean spark arrester
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Tighten bolts and nuts
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Remove carbon deposits in exhaust port
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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 port
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Replace fuel tube, fuel tank cap gasket
It is recommended to replace every 3 years
Problem
Cause
Action
Engine Will Not Start
• Empty fuel tank
• Primer bulb wasn’t pushed enough
• Engine flooded
• Fill fuel tank
• Press primer bulb until fuel flows
through fuel return line
• Use warm engine starting procedure
Engine Will Not Idle
Idle speed set incorrectly
Set idle speed
Engine Lacks Power or Stall
When Cutting
• Throttle wire has come loose
•
Dirty air filter
• Clogged spark arrester or exhaust port
• Tighten throttle wire
• Clean or replace air filter
• Clean spark arrester or exhaust port
