2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 250Get this manual
COOLING AND BILGE SYSTEMS 9-15 After Submerging
17If the engine does not start, there may be water in the fuel system18If the fuel tank has water in it, it must be emptied by pump or siphonRefill the tank with fresh fuelDo not dump contaminated fuel in places not designated for that purpose
WARNING