1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Manual, P/N 787024, Page 48Get this manual
Fuel System Components Anti-Siphon Valve
If an anti-siphon valve is used, it must be of sufficient size and rating as to allow maximum fuel flow at all timesBronze anti -siphon valves that resist corrosion are highly recommended, aluminum ones are notOMC offers the correct valves; contact your OMC Genuine Parts dealerBoat Fuel Line
The boat fuel supply line must be minimum of 3B in(9,5 mml inside diameter, and should meet all A.B.Y.Cstandards for such installationsFuel Filter
The FFlfuel system is protected by filter that prevents water and debris clogging vital parts of the fuel system
A canister water separator filter is located behind the air silencer at the front of the engineIt has 13 micron ratingand should be replaced on yearly basis The fuel filter bracket provides mounting point for the lift pump and the oiling systemThe fuel filter "out" line features quick disconnect type connectorDo not substitute filter of lesser capabilityWater-in-Fuel Sensor