Del
I believe this is the same as another i do have. I think it is off a C body.
The correct pulley is closer to 7" and completely smooth or dish shaped in the front, that is no ridge for the belt. I would guess that the back of the pulley at the arbor is approx. 3/4" to 1" out from the back face of the pulley, making belt alignment impossible. Trimming this portion back may not be enough to align the belt with the other pulley's. But thank you for looking.
