The guy said that it ran before he tore it down but he wanted to see how it worked.
LOL!
Not laughing at you, but the prior owner.
I once went to look at a 1940's Ford 8N tractor advertized in the classifieds as: "Runs GREAT!" When I arrived he started walking me around his garage and introducing me to the pieces scattered all over.
"How do you know it runs great?"
"It did when I took it apart. I can have it back together in a week."
"Here's my number. Call me when it runs great again and we'll talk."
Never did find out if he got her back together.
Did you check to see if there is a downloadable exploded diagram on their website?