I bought that bike about ten yrs ago for next to nothing in dusty, non running original standard condition. I replaced no hard parts- this is how it cleaned up. It did not have a mark on it. Wish I still had it
That is the exact engine we had on our washing machine growing up. When I was about 10 I made a minibike from wood scraps from my grandfathers cabinet shop and I would take the engine off the washing machine and bomb the dirt roads around town on it. One time I took the engine and my mom wanted to do laundry, When I got back she kicked my ass for playing around with her stuff.