2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5006590, Page 110Get this manual

2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5006590, Page 110

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FUEL SYSTEM CARBURETOR OPERATION

As the thottle valve is opened gradually, air flowing though the thottle increases in propotion to the valve opening angleAt this time, because fuel mixtu