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Need help about adjusting fuel/air mixture for Rotax FR125 engine
Hi all! a friend of mine is competing the Middle East Karting Cup. Now, we're both new to Rotax and are trying to find guides everywhere on kart preparation, setup, repair and spares guides. One thing though that we know how it works but don't actually know how to adjust is the fuel/air mixture of the carburetor. Keep in mind that we don't have any special software for it. So would anyone here know where I can find a guide to adjusting the fuel/air mixture?

Thanks!
Who O why a Rotax

best of luck lep, piece of advice the jetting is vital in those also try messing around with the power valve.

Get a kf-1 or 2
Get a 100cc of eBay and have some fun more like Sully!

What about KF4? lol I actually haven't seen one in existance privately owned!

FGED GREDG RDFGDR GSFDG