Precautions - Mercury MerCruiser Service Manual

MPI ECT Fuel System

Precautions

Avoid fire or explosion hazard. Electrical, ignition, and fuel system components on Mercury Marine products comply with
federal and international standards to minimize risk of fire or explosion. Do not use replacement electrical or fuel system
components that do not comply with these standards. When servicing the electrical and fuel systems, properly install and
tighten all components.
Neglect or improper maintenance, repairs, or inspections of the power package can result in product damage or serious injury
or death. Perform all procedures as described in this manual. If you are not familiar with proper maintenance or service
procedures, consign the work to an authorized Mercury Marine dealer.
Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or
death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the
battery before maintaining, servicing, installing, or removing engine or drive components.
Explosive fumes contained in the engine compartment can cause serious injury or death from fire or explosion. Before
starting the engine, operate the bilge blower or vent the engine compartment for at least five minutes.
Fuel is flammable and explosive. Ensure that the key switch is off and the lanyard is positioned so that the engine cannot
start. Do not smoke or allow sources of spark or open flame in the area while servicing. Keep the work area well ventilated
and avoid prolonged exposure to vapors. Always check for leaks before attempting to start the engine, and wipe up any
spilled fuel immediately.
Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide
a sufficient supply of water to the water inlets during operation.
IMPORTANT: To avoid damaging the electrical system, follow these precautions:
• Do not tap accessories into the engine harness.
• Do not puncture wires for testing (probing).
• Do not reverse the battery leads.
• Do not splice wires into the harness.
• Do not attempt diagnostics without the proper, approved service tools.
Lubricants, Sealants, Adhesives
Tube Ref No.
Loctite 567 PST Pipe
9
Sealant
Loctite 242 Threadlocker
66
2-4-C with PTFE
95
Page 5A-2
Description
© 2016 Mercury Marine
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NOTICE
Where Used
The threads of the barbed hose fitting
Threads of the throttle body mounting screws
O-rings
Seal grommet
Fuel pressure regulator O-rings
O-rings and seal grommets
92-802859A 1
90-8M0099748 eng DECEMBER 2015
Part No.
92-809822
92-809821