Has any Body had this problem. witha 6.5 horse briggs. It will start 1st pull when cold, run it for 30 min ( when its hot) when you shut it down and try to restart it it won't start at all. when it sits and cools down then it will start right up.Its been in the shop 6 x know they checked the valves, changed the carburator, went through it they even called a briggs rep in to look at the problem and that what he said it was and fixed it for free. Know today when i used it the same thing happened. something is getting hot and won't let it start? its at the shop know but i can't check any thing but wanted to know. what about the lemon law?