Hi All,
Thanks for getting back to me. I was about to post a reply and realized that I could use the B&S codes to identify the beast. From the codes on the shroud I was able to ascertain that it was manufacture in July 18 1989 at plant 28. It is a 11 cubic inch displacement basic design 0 with a vertical shaft, plain bearing with aux drive (PTO) perpendicular to the crank and rewind starter. So its older than I thought. The motor seems OK except for a leaking lower crankcase seal and oil breather tube. I originally thought it seized but after removing the brake I was able to rotate the Fly with no grinding and the pulley moved. As said in the original post I need to find a picture or diagram showing how the controls go together. I can hopefully start it first and see if it is worthwhile proposition other than that its parts. It would be nice to get going as it is a bit bigger that the chondas I have been using to mow my paddock while I'm getting around to fixing the ride-ons I have. As mentioned in the replies newer models have the PTO driving the front wheels with the drive mechanism under deck and off the bottom of the crank.
Rollo