1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 156Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 156

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Possible Cause Improperly mixed fuelContaminants(water, dirt, etc in fuelFuel tank air vent closed or restrictedA pinched, cut or restricted fuel lineAlso loose fuel line connectionDirty or restricted