Hi Joe

It is 4 stoke, Briggs & Stattion engine, 5hp 2.6kw. I tried 50:1, and it could not start. Then, I changed to 25:1, and it worked just 10 minites and stopped. I found the engine is very hot. I left the engien cool about half an hour, and I added extra fuel to 25:1, and the Lawmower nener started anymore.

Could you please tell me what is the problem?