Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 46Get this manual
8Remove hose lamps (a) and separate fuel hoses trom uel filter (b) and fuel cock (c) CleaningInspection
1Flush fuel lank with clean gasoline2In spect fuel tankhoses, in-line filter and fuel cock for signs of leakage or damageReplace components as necessary3In spect fuel filter screen on fuel cock for sediment buill-upClean dirty screen with solvent or replace fuel cock if screen is damaged4Replace in-line fuel filter if dirty5Replace fuel tank cap seal ing ring (a) if damaged6Flush fuel strainer (b) with solvent and blow dirt from strai ner screenusing low pressure com pressed ai r