Bonjour,
A big thank you to Max, who built this exceptional and extremely rare engine and then allowed me to add it to my collection.
Like my other engines of this type, it is extremely difficult to start, despite the fact that Max made a special carburetor to help.
It was sold only as a kit and is no longer available. The original link is:
The Karl Internal Combustion Engine Kit allows you to build a fully functional internal combustion engine yourself.
I'm going to make a small adapter that will allow me to use a drill to start it, as I've only managed to get it to backfire for a few seconds so far. To be continued...