Hello, I’m getting out a little longer now to hopefully make all the factors known. Since December I have a GSF 650 BJ 2006 with approx. 65,000km. Complete service from Suzuki was made shortly before the sale. A few weeks later I unfortunately dropped off and since then the machine ran only round and wanted no speeds over approx. 5500 bars. Speaking at 100km/h was over, uphill also earlier. Higher speeds could not be reached in the higher gears, which was also expressed by stuttering. I then removed the carburettor all small components that can be removed in the ultrasonic bath cleaned the carburettor itself also clean, whereby there were no strong dirt there. The carburettor was not resynchronized. The bandit went better but not great afterwards, so about 120 km/h were inside. With carburettor cleaner it was then again better so the approx. 160km/h was possible. d the engine refuses to produce more power. If I want to pass through the 2nd gear until about 12000 it goes well up to 7500 then it stutters something and if then 8000 revolutions are broken through it also runs quite well up to 10/12000. What is added is that the bandit behaves differently every day regardless of the weather or the tank filling. Sometimes only 110km/h, sometimes 130km/h and sometimes again 160km/h, however faster does not. I unfortunately personally do not know at the moment and I don’t want to hire a workshop to troubleshoot for cost reasons either. Maybe one of you has had similar experiences.