FNM HPE Series Owner's Manual page 84

Take care when reassembling to maintain the electrical continuity (contact between the metal
parts).
4. Reopen the sea water circuit and verify for leaks.
3.3.8 Fuel filter replacement
Ordinary maintenance: made by the boat user and the workshop staff.
To replace the fuel filter follow the instructions:
1. Turn OFF the engine and take care to close the fuel suction line.
2. Let the engine cool down if it is hot.
3. Prepare a container to collect any leaks.
4. Remove the sensor plug and the sensor from the filter (take care to gasket). Pay attention to
possible fuel leakage.
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FNM HPE Series