Water-Separating Fuel Filter (Mpi); Water-Separating Fuel Filter - Mercury Mercruiser Tow Sport 5.7 MPI Manual

Section 5 - Maintenance
1. Remove the PCV valve from the port valve cover.
a
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 that the PCV valve is tightly seated in the valve cover.
Water‑Separating Fuel Filter (MPI)
Water‑Separating Fuel Filter
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.
Failure to release pressure from the fuel system will result in fuel spraying out, which can cause a fire or explosion. Allow the
engine to cool completely and release all fuel pressure before servicing any part of the fuel system. Always protect eyes and
skin from pressurized fuel and vapors.
Page 48
b
mc71925-1
WARNING
!
CAUTION
!
a - PCV valve
b - Hose
90-8M0076545 NOVEMBER 2012
eng