wvdpoel

I have a similar issue. New for me 2015 beta 300 4t. Bike ran good and easy to start, just running rich (lot of back firing). Parked the bike overnight. Wanted to start it the next day, started first kick with choke. Pushed in the choke, but apparently not far enough. Let it run, and was wondering why the engine sounded so different. After a while (couple of minutes), I finally checked the choke and noticed it was not pushed in totally. Since then, bike is almost impossible to start, only with choke in the short position and the engine revs like hell. As soon as I push the choke in, the bike dies. What might be the cause of this problem? Thanks!