Section 5 - Maintenance
90-8M0074347
eng
OCTOBER 2012
Page 75
2. Remove the IAC muffler from the slot in the air valve plate using needle‑nosed pliers.
a -
IAC
b -
IAC muffler location
3. Inspect the muffler for holes, cracks, or deterioration. Replace if damaged.
IMPORTANT: Do not use a cleaner that contains methyl ethyl ketone on the IAC or on electrical connections.
4. Clean the muffler with warm water and mild detergent. Replace if necessary.
5. Allow the IAC muffler to dry completely before use.
6. Install the IAC muffler.
Changing the Water‑Separating Fuel Filter
!
WARNING
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. Shut off the engine and allow to cool for 12 hours.
2. Close the fuel supply valve, if equipped.
3. Wrap the water separating fuel filter with a cloth to help catch any fuel spills or spray.
4. Remove and discard the water separating fuel filter and sealing ring from the mounting bracket.
5. Coat the sealing ring on the new filter with engine oil.
6. Thread the filter onto the bracket and tighten securely by hand. Do not use a filter wrench.
a -
Fuel filter base
b -
Sealing ring
c -
Fuel filter
7. Open the fuel supply valve, if equipped.
8. Ensure that the engine compartment is properly ventilated.
9. Supply cooling water to the engine.
10. Start the engine and check for leaks around the fuel filter assembly. If leaks exist, stop the engine immediately, check the
filter installation, clean spilled fuel, and properly ventilate the engine compartment. If leaks continue, stop the engine
immediately and contact your authorized Mercury MerCruiser dealer.
a
b
a
32180
a
b
c
6527
