Hello, a black-suspended spark plug recently gave me the opportunity to adjust a less fat mixture to my scooter via the setting on the carburetor. The reason for this is also a slowly rotating rear wheel. So both would have to be adjusted again depending on each other. So far as the theory I wanted to put this into practice. And now I am faced with the problem that I can find neither gas or mixture adjustment screws. Just as I did from other carburetors. With a long slot screwdriver you can adjust mixture, with a cross screwdriver the stand gas. I see only screws that serve to other parts and its attachment. Unfortunately, but not to adjust the carburetor. Maybe someone had the same scooter and has already seen through the problem? Would be nice if I had a breakthrough with your help in this problem. Look forward to your contributions.