Problem with the Eli

Hello MTler, I recently purchased a Kawasaki EL 250 cheaply. Unfortunately, I have not yet been able to drive a top speed, since probably the carburetor is dirty or dejected. That means the speed suddenly falls off. But that’s not my main problem at the moment. But much more the side stand whose Elecktronic lock was probably bridged. Or otherwise it was set out of force. So what am I supposed to do to make the bridge first? Where could it be? Gasoline tap or carburetor? Or both? Or is it not only the gas tap? Because the Lufi was still OK. So why should the carburetor be dirty again. Is there hardly any danger. Did anyone have any idea? P.S.: Sorry Dessie I’ve been a bit in work in the last few days. No panic everything will be fine! No, I didn’t buy it from Dessie!