Ariens st824 tines not turning. I checked belt it seems fine. When engine is started and lever is pressed I definitely smell something burning. We got a good storm up here in northern Michigan. Third use this year but this time I was trying to move heavy drifts that were a tall 2 feet high. All snow was removed from tine and shute areas. Help please we are expecting a lot more snow this evening and through the week. THANKS