I have a B.F.Avery model V. Where will I find the seriel number. It has a plate riveted to the side of the engine block. It has some pressed in numbers, 2 5/5 x 3 (bore and stroke)? 006 006 (valve settings)? and ZXB3 and 1170269. This is all that can be read on the tag, any painted on identifying descriptions are gone. My Dad acquired this tractor in the early 1960's last time it ran was in the late 70's. Its been sitting inside, not stuck but seems to have very little compression. Any way time to make it work and shine again. Dad said it had a Hercules motor, is that correct? Would there be a manuel or service book for this tractor? Thanks for any assistance. gobble