Hi wondering if anyone can help. I have a MTD Yardman with a 13.5hp Tecumseh ( model OV358EA ) and it wont turn over properly. It winds over as if there is to much compression. I have got a brand new, charged up battery so thats not the problem. Is there a simple way to check the starter motor or regulator to see if they might by faulty. Or could it be as simple as resetting the valves ( havent played with them yet, first time i've played with a tecumseh ) if so what would the settings be. Any help or advice appriciated, Paul.