My dad has an old Sears natural gas, fan-type sealed combustion wall furnace, model #867 73572. The motor just went a month ago. I found a guy who rebuilds motors, but he needs the wiring diagram. Is there any way to get an owner's manual for this product after all these years?

Bob

That motor probably sells for about $5-10. I cannot see why you would rebuild it as you can get a better one fairly cheap.