2007 Suzuki 700 KingQuad ATV with 15 hours riding time on it and when you ride for about 20 minutes after warms then park shut off the engine 3-5 later t?

The most common culprit is a stuck thermostat, which prevents coolant from circulating properly and causing the engine to overheat. It is also possible that the radiator or coolant lines are blocked, preventing the engine from cooling down properly. Finally, it could be a problem with the water pump, which is responsible for circulating the coolant.