Been 20 years since I spoke french.
I haven't used mine all that much since my high school days...thats like 50 years ago...lol...it got drummed into me along with a few other languages as well.
Hoping my french syntax wasn't too rusty for him to understand the carby tuning instructions, needle valve position float, etc. as well as reminding him to retorque his head bolts and to convert either foot or inch pound measurements i gave him to his metric equvalents.
He was running about 60 miles (100km) but would only run on full choke so im assuming he may well have never retorqued his head periodically resulting in a possible super lean situation that prevent starting or running without choke full on.
Also instructed him to inspect spark plug and clean but better to just replace and gap at 6mm,(.025)...DAMIEN