RedactedNarrative: A vessel reported a fire. Upon arrival to the vessel there was no smoke or fire coming from the boat.  Operator states he used his fire extinguisher on the motor.  One subject later complained of possible burns to her legs from the heat of the engine.  Harrison Fire transported her to McLaren Macomb for evaluation.  Boat was towed by a friend to owners slip.  Harrison fire was advised and investigating the incident.  No other injuries were reported.