Section 5 - Maintenance
90-8M0074347
eng
OCTOBER 2012
Page 79
Positive Crankcase Ventilation Valve (PCV)
Changing
NOTE: We recommend the use of Mercury MerCruiser replacement parts to ensure compliance with emission regulations.
NOTE: On V6 models, the PCV valve is non‑serviceable and is an internal component of the valve cover.
1. Remove the PCV valve.
2. Disconnect the PCV valve from the hose and discard the valve.
a -
PCV valve
b -
Hose
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.
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. 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 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.
Tube Ref. No.
Description
Where Used
Part No.
Synthetic Blend MerCruiser Engine Oil
SAE25W‑40
Filter sealing ring
92‑883725K01
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.
a
b
17290
a
b
c
6527