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Mercury MerCruiser MCM 7.4L MPI User Manual

Mercury MerCruiser MCM 7.4L MPI
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MCM MODELS - BRAVO AND BLACKHAWK DRIVES
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 2A-13
Fuel Supply Connections
WARNING
Be careful when working on fuel system. Gasoline is extremely flammable and
highly explosive under certain conditions. Do not smoke or allow spark or open
flame in area. Wipe up any spilled fuel immediately.
WARNING
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.
• 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
OVERTIGHTEN.
• Install fuel line. To prevent overtightening, hold brass fitting with suitable
wrench and tighten fuel line connectors securely.
• Check for fuel leaks.
1. Connect fuel line from fuel tank(s) to engine. Ensure connections are secure. Check for
leaks.
75036
a
b
a-Fuel Inlet Hose Connects Here
b-Fuel Filter Cover
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Mercury MerCruiser MCM 7.4L MPI Specifications

General IconGeneral
Engine TypeV8
Bore4.25 in (108 mm)
Compression Ratio8.6:1
Ignition SystemElectronic Ignition
Alternator65 Amp
Displacement7.4L (454 cu in)
Fuel SystemMulti-Port Fuel Injection (MPI)
Horsepower310 HP
Torque450 lb-ft
Cooling SystemClosed Cooling
Fuel Requirement87 octane (minimum)
Stroke4.00 in (101.6 mm)

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