I have a '92 Maxum 2300 SCR cabin cruiser with built-in head. Can't remember the name, it starts with a "J". So somewhere there is a water tank - I fill from a port on the starboard side near the helm. It runs the sink off a pump. Near the stern is another port labeled "waste". Does that mean the head has a separate water tank? Looks kind of gunky down there. And I'm guessing there's a seacock somewhere per the head manual, but I have no idea where it is. I don't see anywhere in the head where there's panels that can be pulled or unscrewed to get to one and open it up. I'd like to save the $300+ I'm being told it well take to winterize water and black water tanks. I can take care of the engine and lower unit - it's a 4.3L Merc cruiser with an Alpha One and I've done those before. Thanks in advance.
