Scheduled Maintenance Procedures Specifically For 3.0 Mpi Ect; Cleaning The Flame Arrestor; Cleaning The Iac Muffler; Section 4 - Maintenance - Mercury 3.0 MPI ECT Operation & Maintenance Manual

Task Interval
Every 5 years

Scheduled Maintenance Procedures Specifically for 3.0 MPI ECT

Cleaning the Flame Arrestor

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.
1. Loosen the flame arrestor clamp.
2. Remove the flame arrestor.
a
IMPORTANT: Do not use an acid‑based cleaner as it can deteriorate portions of the flame arrestor.
3. Clean the flame arrestor with warm, soapy water.
4. Inspect the flame arrestor for holes, cracks, or deterioration. Replace if necessary.
5. Allow the flame arrestor to air dry completely before use.
6. Install the flame arrestor. Tighten the flame arrestor clamp to specifications.
Description
Flame arrestor clamp

Cleaning the IAC Muffler

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.
1. Locate the idle air control valve (IAC) on the rear of the engine's port side.
90-8M0113856 DECEMBER 2015
eng
• Replace the coolant/antifreeze. Replace every two years if not using extended‑life coolant/
antifreeze.
b
32554
Maintenance to Be Performed
WARNING
!
a - Flame arrestor
b - Clamp
WARNING
!

Section 4 - Maintenance

Nm lb‑in.
3 26
Page 41
lb‑ft
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