Interesting how just 40 years ago, materials used on a small generators where built to last. Anyway, this is a solid YouTube channel if your interest lies on small Gen set repair. His detailed descriptions are excellent.
This 2 cycle set is an interesting design and an example of an affordable, well made unit made in America, before suites sold us out to off shore countries.
https://youtu.be/FCA7f10Xm1A