Yamaha Maxster 125 bought without letter

Moin together, got me a Yamaha Maxster 125 yesterday. Standing around for years, you looked at her as well. Covered with moss, twigs and shackled leaves, etc. The scooter is original and unbasked. The mirrors are missing. Engine runs, but does not stop. One has to give gas so that it does not die off. Unfortunately, the previous owner no longer finds the letter. He gave me the vehicle license, as well as a key. We also made a purchase contract. Get a safety certificate and apply for new papers from Yamaha. I bought the good stuff for 50,-€. I probably have to make the brakes, new brake fluid, coverings I have to look at. Oil with oil filter, air filter, new battery, new mirror and a new turn signal switch. Check drive and set valves. So much maintenance. I take pictures when it is bright. Here are still the pictures they were in for classifieds.