I also am not familiar with the gx200, but the 40 seconds run time each time gets one thinking about what could cause an engine to stall after that amount of time.
Is the exhaust a system that is easy to see that it is not restricted? If not, you might want to pull the exhaust and try it without an exhaust, to see if the exhaust is a problem.
Ok i am back and no change still stalling so i did all the thing you guys said so now it time for a new one to bad because the engine is low hours going to keep it and send it to a small engine school and let them fix it . So the engine will be the talk or the class thanks for the info guys later davedude
