RedactedNarrative: The owner of the vessel stated he had been having ongoing issues with starting the motor. The passenger attempted to start the boat and thought she had flooded the engine so the owner removed the flame arrester, stuck his finger into the carburetor and instructed the passenger to start the engine. Immediately flames shot out of the carburetor and started the back seats on fire; as they were unable to locate the fire extinguisher the owner began putting out the fire with buckets of water. The fire department arrived and finished putting out the fire. Upon inspection the interior appeared to be completely destroyed.