2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 127Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 127

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Troubleshooting Symptom: The engine idle speed is not steady, but increases or decreases Check the carburetors Check the air intake system Check the ignition system
Replace the COl unit
Do

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