Maruyama BST23 - Troubleshooting

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Every Every Every
Maintenance Daily 20 hours 50 hours 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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Tighten bolts and nuts
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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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Remove carbon deposits in exhaust port
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Clean spark arrester
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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 ports
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Replece fuel tube, fuel tank cap gasket It is recommended to replace every 3 years
Problem Cause Action
Engine Will Not Start STOP switch set to off position Move switch to on position
Empty fuel tank Fill fuel tank
Primer bulb wasn’t pushed enough Press primer bulb until fuel flows
through fuel return line
Engine flooded Use warm engine starting procedure
Engine Will Not Idle Idle speed set incorrectly Set idle speed
Engine Lacks Power or Stalls When Throttle wire has come loose Tighten throttle wire
Cutting Dirty air filter Clean or replace air filter
Troubleshooting
If further assistance is required, contact your local authorized Maruyama service dealer.
Maintenance Period
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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-cycle engine oil.