I have a Briggs 5 hp Fun Power engine with an older style carb that is hard to start when its warm even if you only kill it for 30 seconds... I would often start it choked with the throttle wide open! It is often easier to start when cold and runs really strong This mini bike had been sitting in my garage for a year and I just did a tune up on it (rebuilt carb, new spark plug, oil) I'm guessing its ether the ignition coil or the valves? I am mechanically inclined and have tinkered with alot of briggs engines but I have never messed with one internally so I'm not exactly sure what to do if it turns out to be the valves...
Nick
Nick