I looked at the previous posts and didn't find a similar problem so here goes. My brother's Mastercraft PWC sits out in the lake on a submerged trailer all summer. The battery went dead so we took of seat to try to jump start it. Eventually we just took out battery and charged it overnight and it worked. Question is how much water should be in the engine compartment. His was what I considered excessive. He said it was supposed to be like that but I don't believe so. Like the battery and assorted electrical leads were under water. Maybe I'm wrong . I don't know much about these PWC. Anybody got any advice.