I don't know what the switch is called in English but it's the red/orange switch that kills the engine or keeps it from starting that's on the right side of the handlebars. The engine will turn off if I just touch it. I don't have to push it down in either direction, I just have to come near it. It doesn't matter where on the switch, if I touch it the engine stops. Other than that it works as it should and the bike will start right up again. Has anyone else experienced something similar?