I was talking with someone yesterday (a non saw nut). He described his "big saw" as an old sthil that a buddy dropped off to him as a big sac of parts.... He said it was really old, heavy as he** but cut really well. Then he went on to say that it had multiple attachments, you could put a concrete cutting wheel on it, I think he said a post hole digger (auger)... etc. I am curious as to what this saw is... he described the piston as being massive. I'm going to have to see this thing.... sounds like its not running at the moment. He "washed" it, now it won't run, described as "just fires/screams and sputters out".