I remember a not that long ago news release from Briggs that stated they had a new "easy start", or something like that, their were introducing. It seemed to be a spring loader type system that was activated when you first started the engine. When you stop the engine, the "easy start" would turn the engine over the next time you wanted to use it, instead of pulling the cord. They said you only needed to pull the cord once a season.
I looked over their site, but couldn't find any mention of it. Either I didn't search well enough or they dropped it.
Greg