I put my extreme shallow in the water yesterday. It started up great after sitting all winter. Before leaving the shore I wanted the check the engine and noticed water coming out at the rear of the engine where the engine mates to the jet unit. You can see and feel where the gasket has been pushed out. I also noticed that the thermostat housing was apart. It is an inline housing held together by a 2 inch hose.
I am thinking that there was some water in there over the winter and it froze pushing the gasket out and the thermostat apart. I have owned the boat since new and this is the third winter sitting out in Fairbanks with no problems. It has a heater and the strainer was removed in the fall and the system blown out with compress air. It is my understanding that his engine is self draining.
Anyone have any insite??