Mercury Mariner Service Manual 6, 8, 9.9 210CC Sailpower, Page 46Get this manual
PROBLEM: Engine Floods Possible Cause
Corrective Action
Dirt or foreign particles are preventing inlet needle from seatingWorn inlet needlePunctured floatIncorrect float setting Primer check ball not seating
Flush out inlet seat and clean inlet needleReplace with new inlet needleReplace with new floatReset float to correct levelCheck and clean, if necessary
PROBLEM: Engine Runs Too LeanPossible Cause Corrective Action
Carburetor is looseAir leak past mixing chamber coverFuel level too lowClogged high speed Restricted fuel flow to carburetorIncorrect high speed jetLow speed mixture set too lean Air leakage into fuel system