Rubber wheeled John-Deere Reaper

I have dug my grand-dads rubber wheeled John-Deere reaper out of the back yard and literally had to use a chain saw to cut it out of an overgrown elm tree. Is i8ntacft and should be mostly complete and with some wood work and a new draper canvas, at least be operational. Who can I be directed to to determine what model I have and if any parts machines may be available if parts are needed, beyond wood work? Pictures would certainly be nice. I can't figure out the knotter arrangement and will need help on that subject.
Al

I don't think it will have a model number. I have Operator's Manual OM-W5-152 For the 8 and 10 ft binders. This covers it all: Operating, Adjusting, and Servicing. Has complete parts list and set up instructions. These are PTO driven.

What size tires are needed? This manual lists 7.50 x 16 for main wheel and 4.00 x 18 for grain wheel. It also has threading instructions.
No date listed for the manual but a couple photos show binders connected to late styled A and B tractors.

Hello Ron, Thanks for your post. Is the binder literature, you refer to, something that you would sell or that I could get a copy of? The road towing tires are 500 x 16, I think. The outside small field tire is as you said 400 x 18. The big field tire looks bigger than a 16, I will need to crawl under to get a better look at it. The big tire looks like it may be usable as it has been protected from the sun. I was back at my Grand-dads orchard today, where I moved the binder from, and see what I think is a field part of the binder. I watched a You Tube clip that shows an apparatus hanging on the discharge side of the binder with those flip arms that move the bound bundles away from the knotter after the bundle is formed. In my area very few binders have survived the ravages of time and the scrap iron market. This one is the most complete and intact machine I know of. My Grand-dad simply parked it in operational condition and never used it again. He was definitely Old School where nothing got thrown away, as it may have a purpose some time in the future. I inherited the only automobile he ever owned which is a 1922 Dodge Bros. touring car. What years would these John-Deere binders, PTO driven, have been built? I am guessing from the 1920's to the early 1950's?
Regards,
Alan

Did you get my email ??