MerCruiser 305 CID (5.0L) Service Manual page 436

SERVICE MANUAL NUMBER 24
Precautions
Always disconnect battery cables from battery BEFORE working on fuel system to
prevent fire or explosion.
Be careful when changing fuel system components; gasoline is extremely flam-
mable and highly explosive under certain conditions. Be sure that ignition key is
OFF. DO NOT smoke or allow sources of spark or flame in the area while chang-
ing fuel filters. Wipe up any spilled fuel immediately.
Make sure that no fuel leaks exist before closing engine hatch
DO NOT operate engine without cooling water being supplied to seawater pickup
pump, or pump impeller will be damaged and subsequent overheating damage may
result.
Fuel Supply Connections
Avoid gasoline fire or explosion. Improper installation of brass fittings or plugs into
fuel pump or fuel filter base can crack casting and/or cause a fuel leak.
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Index
90-861327--1 OCTOBER 1999
Apply #592 Loctite Pipe Sealant with Teflon to threads of brass fitting or plug.
DO NOT USE TEFLON TAPE.
Thread brass fitting or plug into fuel pump or fuel filter base until finger tight.
Tighten fitting or plug an additional 1-3/4 to 2-1/4 turns using a wrench. DO NOT
OVER-TIGHTEN.
Install fuel line. To prevent over-tightening, hold brass fitting with suitable
wrench and tighten fuel line connectors securely.
Check for fuel leaks.
FUEL DELIVERY SYSTEM FOR ELECTRONIC FUEL INJECTION
WARNING
WARNING
WARNING
CAUTION
WARNING
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