"I would suggest that you star
"I would suggest that you start off with a new Filter Element and then change at least once a year prior to the season. The interval after that would depend on many factors, condition of Fuel Tank, Fuel used, Hours used, etc.
If this is a Racor style spin-on filter there is a bowl on the bottom where the water collects from the filtering. Use a small bright flashlight to shine inside the bowl and inspect, if there is watewr then it can be drained.
To change the Element I would suggest that you remove the Drain Plug for the boat in order to help drain heavy fumes and turn the Battery Switch to the off position and turn off any other electrical items that could produce a spark (Bilge Pump, Shore Power, etc.). Keep a good Fire Extinguisher close by. Next you should have a Fuel Sut-Off valve at the Fuel Tank, close this valve in order to stop the flow of Fuel. Now you should be able to spin-off the element similar to an Oil Filter. Replace the Element per the instructions provided using new Seals. Be careful with and wipe up any spilt Fuel and make sure the area in well ventialted.
GASOLINE is FLAMABLE and VENTILATION is IMPORTANT.
Cheers,
Steve"