Thanks for the ID suggestions. There are quite a few of the Erskine blowers in the area as their manufacturing was local to us. I agree that the reverse is too fast. You need a good amount of engine speed to throw that snow, and that's not going to work too well with a fast reverse. I intend to use it as a pull blower. I like the ingenious adaptability, though. The fellow I bought it from was using it on his 7710.
Yes, the breaker bars are recently replaced.