Water in Fuel Sensor?

[Lucky John]

I went to start up today for the ride home and the "Water in Fuel" sensor went off.I got back to the dock and changed the water/fuel seperator but my mechanic said the sensor on the egnine needs to be changed.Is this an easy fix,something I can do myself,or should I send the mechanic down for the repair?
TIA

 

[Lucky John]

Well I called to find out about the sensor and my mechanic Jarivs Marine already went down and changed it under warranty
They really treat me great down there )