H31_83-87 Muffler
H31_83-87 Muffler is a "built in" fiberglass box that is filled with water discharged into the mixing elbo. The sound is "muffled" by forcing water out the exhaust hose. There is no "replacing" it, unless you are going to extensive efforts. If it is leaking, it can be patched with fiberglass.Get into the starboard laz, check the exhaust hoses where they are attached to the "muffler" or squeeze yourself behind the fuel tank to see if the hose is leaking where it attaches to the outlet at the stern of the boat (or get an extension mirror). A water or fuel leak in the starboard laz on the level of the muffler and fuel tank, will make its way into the port berth.My fuel vent hose leaked into the starboard laz, which drained into the port berth soaking my rear port cushion.To fix my leak and clean up all of the fuel, I cut the divider between the port berth and starboard laz, just in front of the fuel tank. Removed the tank, cleaned up the mess and replaced all of the hoses, including exhaust, while I had the tank out. Replaced the piece that was removed with a piece of starboard, making it easy to remove for future servicing.bill