i installed a new carb.. thinking that was the problem but...no....now it runs and cuts off when it is hot..so, i was thinking it was the coil...but, i can not find a replacement coil.....i am at my wits end...i have totally taken this thing apart and cleaned it ...i love the machine but, i only got one season out of it with no problems...if u can help me out that would be fantastic.........kj