davek

I believe that the FP engine has an o-ring between the carb and engine case. If the o-ring is cracked or broken it will suck air under the carb and run too lean even with a rich carb setting. That could also cause the engine to overheat. While you are at it, you should also check the tightness of the head bolts and bolts that attach the backplate to the engine case. That could also cause it to suck air and run lean.