Changing Water Separating Fuel Filter - Mercury Inboard 5.7L Manual

Maintenance
1. Remove the PCV valve from the port valve cover.
2. Disconnect the PCV valve from the hose and discard the valve.
3. Install a new PCV valve in the valve cover and reconnect the hose.
4. Ensure the PCV valve is tightly seated in the valve cover.

Changing Water Separating Fuel Filter

Avoid serious injury or death from a gasoline fire or explosion; gasoline is extremely
flammable and highly explosive under certain conditions. When servicing the fuel system
components ensure that the engine is cool, the ignition switch is in the off position, and
that the lanyard stop switch, if equipped, is in the off position. Do not smoke or allow spark
or open flame in the area. Wipe up any spilled fuel immediately. Ensure that no fuel leaks
exist before closing the engine hatch.
1. Allow the engine to cool down.
NOTE: Mercury MerCruiser recommends that the engine be shut off for 12 hours prior to
filter removal.
2. Close 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.
Tube Ref. No.
Page 50
a
a - PCV valve
Description
Synthetic Blend MerCruiser Engine
Oil SAE25W‑40
b
mc71925-1
b - Hose
WARNING
!
Where Used
Filter sealing ring
Part No.
92‑883725K01
90-860174050 JUNE 2005