Plenum - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23
4. Install flame arrestor on throttle body. Apply Loctite 242 to threads of studs. Install four

Plenum

REMOVAL
1. Remove flame arrestor and throttle body as outlined previously.
2. Disconnect IAT and MAP sensor electrical connectors.
3. Disconnect vacuum line at plenum.
Index
90-861326--1 MARCH 1999
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flame arrestor mounting cap nuts. Torque cap nuts to 50 lb-in. (6 Nm).
b
a - Flame Arrestor
b - Cap Nuts (4)
Refer to "Precautions" in this section, BEFORE proceeding.
a - Intake Air Temperature (IAT) Sensor
b - Manifold Absolute Pressure (MAP) Sensor
a - Vacuum Line
b - Fuel Pressure Damper
c - Plenum
MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
a
NOTICE
b
a
b
72790
a
72795
c
75724
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