Hi all!
Just got myself an old machine with a defect engine.
It ran without oil, so I need some service manual and advices about if there is any 4-stroke engines that would fit with some small modifications?

Seen that there are several different versions of the 2-stroked machines, and maybe there is a bigger cylinderkit that works with my bottom end?

Also need some hints about weak spots on these machines and what to look out for….

Thankful for any help provided!