This GP1200 came to shop for service. Then found water sitting in fuel filter. Also about 200cc of water was sitting in fuel tank.
Inspected where water get into fuel tank and I found pressure leak from top of fuel sender as bubbles come out. This top of fuel sender has indentation because if water sitting on top that through gap into fuel tank. Also this pressure leak from fuel tank may occur to fuel leak and in worst case it will have a chance to explode jet ski. 
Dismantled fuel sender. Hose fitting was damaged by corrsion 1of 4.
Base of sender had few cracks as need to replace.This ski used over 300hr and 12years old, it was due to replace.
Replaced fuel sender assy as improved type of top.Better to inspect fuel leak on a regular basis for safe driving as save your life.
