Definitely don't put anything but the monkey down
that line until you know for SURE what it goes to.On my '87H31, the fresh water fill is under a flip-up wooden panel in the center of the top of the transom.Climb down into the starboard locker (you'll fit - I'm 6'4, 230# and I can get in there) and trace out all the hoses, wires, etc.Bring a new element for the Racor fuel filter that is (hopefully) in that locker - you'll want to replace that as part of your 'baseline' maintenance.Check the fuel tank while you're down there - if it's the original plastic one and you can't find an inspection port (that would have been cut by a PO, because Hunter didn't think fuel tanks needed one back then) then you'll probably want to pull the tank someday, cut a port and use it to clean out the sludge. You've got a great boat, have fun!Cheers,Bobs/v X SAIL R 8