One day my motor just quit running. I took it to the shop. They said it ran fine. i never could get it to run ever again. I re-built the carb. I changed the plugs. Cleaned the carb. Hit the carb with a 10 lb maul.. J/K. So, I went out and bought a used 2007 nissan 6hp 4-stroke for 600 bucks. i...