Just got my XR running but unfortunately it will only run when on full choke, even after letting it warm up for some considerable time it will immediately cut out when put to half choke or choke off. I have set the mixture screw to the handbook setting of 1 an 1/8 turns from fully screwed in, but it hasn't made a difference.
The bike starts easily enough but I can't get it to run without choke....
New plug fitter
New air filter fitted
Fresh petrol put in
Any ideas appreciated.