It is, as you might guess, an engine for a bicycle. It has a friction drive.
I bought one at a rummage sale and apparently, it was never used. Never had gas in it.
Except for a few specks of rust on the friction roller, the engine was spotless.
There is no manual and an internet search for info produces little.
And K & S Industries is no longer in business.
I did find a pic on the internet (see attachment).
So I put the engine on the bike, put in a new spark plug, and put in gas & oil (16:1).
It won't start for me though.
I took it to a small engine guy and he couldn't get a spark from it. He said the spark plug was probably not the culprit. He didn't want to look at it further because he figured he wouldn't be able to find parts for it.
So I am stuck with an engine that probably would work just fine if I could just figure out what it needs.