Troubleshooting
Problem
Engine Will Not Start
Engine Will Not Idle
Engine Lacks Power or Stall
When Cutting
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
Clean spark plug and adjust electrode gap
■ Remove dust and dirt from cylinder fins
● Clean spark arrester
Tighten bolts and nuts
● Remove carbon deposits in exhaust port
Replace fuel filter
● Remove carbon deposits on piston head and combustion chamber
● Remove carbon deposits in transfer port
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
• Empty fuel tank
• Primer bulb wasn't pushed enough
• Engine flooded
Idle speed set incorrectly
• Throttle wire has come loose
• Dirty air filter
• Clogged spark arrester or exhaust port
Maintenance
— US-23 —
Action
• Fill fuel tank
• Press primer bulb until fuel flows
through fuel return line
• Use warm engine starting procedure
Set idle speed
• Tighten throttle wire
• Clean or replace air filter
• Clean spark arrester or exhaust port
Every
Daily
25 hours
50 hours
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It is recommended to replace every 3 years
Every
Every
100 hours
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