True pearls of wisdom by a nub, thank you for sharing that!! The back snap is a very good way to start an engine, I do it most the time during the warm weather but my engines tend to start a bit harder come cool weather, then I use a starter. I was tuning a .46 AX for a fellow today and I back snapped it and it fired up backwards, the snap didn't amaze him as much as when I blipped the throttle and the engine caughed a little and started running the correct way. {Engine was real lean!!} It was a day for sharing tips. Four strokes usually will snap start as well or better then a two stroke but they need to be choked or primed correctly. Trick or tip for Joe. A YS will give you a squishy squishy sound when it is ready to get a back snap start, once heard never forgotten!!!