The normal failure would have been the braided wire braking off the motor brush and nothing happening. There would have been no sound, no smoke, no anything. So you’re going to have to look deeper. You didn’t if your motor was OK. Is it seized? After that, I’d first look for a Bendix that wouldn’t spin or the starter motor that wouldn’t turn. If you have a volt meter, check for resistance from the starter terminal to the case. I suppose there is a chance that the brush wire broke off and is touching the case. You’re going to have to open up the starter to find out.
LAD Specialties customer / tony kart / rotax / kt100