1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 141Get this manual
FUEL DELIVERY SYSTEM
Servicing Sight Bowl Fuel Filter
WARNING
Exercise extreme caution when cleaning fuel filter elementsGasoline is extremely flammable and highly explosive under certain conditionsAlways stop the engine and DO NOT smoke or allow open flames in the area while cleaning fuel filter elements
CAUTION
DO NOT turn or tilt fuel filter assembly when removing or installingPULL STRAIGHT DOWN when removing assemblyPUSH STRAIGHT UP when installing assemblyTurning or tilting fuel filter may break fuel line connection on filterThe sight bowl fuel filter removes dirt and water from the fuelCheck the sight bowl frequently and clean the filter as required1Verify that the sight bowl rubber sealing ring is properly positioned in the bowl2Reinstall element in filter cover3Thread sight bowl onto filter cover4Tighten bowl securely by hand3 2