Follow the fuel supply line back to tank and you will find it. To get to ours we have to remove a wood panel in the stern berth. Because of that I have gotten quite adept at the quick change. Open the drain valve on the Racor and let the water/fuel spill through a hose into a container while simultaneously opening the top of the filter body to pull out the canister. Re-insert a new one close it up and shut the valve off as by then any water has been pushed out.