2. Tighten the air filter attaching screw securely.
a - Air filter
b - Screw
c - Intake manifold
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.
NOTICE
Water entering the fuel injection system will cause corrosion and rusting of the injectors and other components, disabling the
fuel injection system. Check daily for water in the water‑separating fuel filter and have the engine inspected immediately if
there is evidence of water in the fuel system.
IMPORTANT: Use a suitable container to collect fuel. Clean up any spills immediately and dispose of fuel in a safe manner in
accordance with all local, federal, and international regulations.
The engine‑mounted water‑separating fine element fuel filter is equipped with a water‑in‑fuel sensor that should alert the
operator when water is present in the filter. This fuel filter needs to be replaced at specified intervals or whenever water is
detected in the fuel, whichever comes first.
The operator may be alerted that the water‑in‑fuel sensor has detected water in the fuel, if the boat is equipped with the proper
instrumentation:
• Instrument notification (if equipped)
• Indicator lamp (if equipped)
When the engine is equipped with a remote mounted primary filter, it should be drained or replaced at specified intervals, or
whenever water is detected in the engine‑mounted fuel filter.
Draining
The engine‑mounted water‑separating fuel filter can be drained of water and sediment by removing the water‑in‑fuel sending
unit located on the bottom of the filter.
NOTE: To ensure complete draining in warm weather, drain the filter before starting daily operations. In cold weather, where
there is a possibility that the condensed water will freeze, drain the filter shortly after the end of daily operations.
NOTE: Place a suitable container under the fuel filter to catch contaminated fuel or water. Dispose of fuel and old filters in a
safe manner in accordance with all local, federal, and international regulations.
1. Place a suitable container under the water‑separating fine element fuel filter.
2. Disconnect the water‑in‑fuel sensor harness connector.
3. Remove the water‑in‑fuel sensor from the bottom of the filter.
4. Unscrew the bleed screw.
5. Drain the filter until the fuel is free of debris and water.
6. Install the water‑in‑fuel sensor and tighten securely.
7. Connect the water‑in‑fuel harness connector.
Section 4 - Maintenance
90-8M0133568 eng JUNE 2017 Page 45
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