Hello, last week wanted to leave my scooter again after the winter break. He unfortunately no longer starts. At the carburetor petrol arrives, the carburetor itself looks good. I changed the spark plug on suspected, unfortunately also had no success. Wanted to test if sparks come from the spark plug. I screwed the spark plug out and put it on the metal where the valves are located. If I press the e-starter no spark is watching. I do something wrong or where It can be there that no ignition spark comes. Battery has been charged before.