I have a snowthrower that is 8 years old. I live in new england and need this to last a few more years. It is electric start and usually starts right up. Last storm I went to start it and the smell of burning belts start to come from the machine. I took it to a friends house with a garage and to the cover off to reveal the belts. They all seem fine but I connot pull the starter cord now like it is frozen? I am not sure where to start? I thought it was the belt but now I'm at a loss. Any ideas?