RedactedNarrative: Operator had fueled his vessel at the Happy Hollow Marina fuel dock.  He untied the vessel and drifted away from the dock, but the vessel would not start.  During this time, Subject docked her PWC at the fuel dock.  Operator was working on starter when his vessel caught fire.  He and his passenger abandoned the vessel and called 911.  The vessel drifted in the marina area, coming close enough to cause damage to the PWC, but the dock and fuel pumps were not damaged. VFD''s responded to the incident and were able to extinguish the vessel.  The owner (father of operator) was able to bring the trailer and the vessel was removed from the water.