Auf dem Foto ist die Farbe der Zündkerze o.k. Sie sollte rehbraun sein.

Danke!

Not completly satified how she runs. I did put the needle another notch lower. It is now on the 4th notch seen from the bottom. Lets see what that does.

  Exactly in the Middle now.

O.K. sag Bescheid, ob es besser oder Schlechter geworden ist.

Hi volker, did get worse. It dies when you triest to acceleratie. Only at higher revs runs good. So what now....

Checked the ignition. But is ok. 0,4 mm gap
Opens exactly when mark on flywheel aligns with first mark on enginehousing
And runs good at higher revs. So think problem is carburettor.

Versuche die LeerlaufLUFTschraube nachzustellen. Mit warmen Motor Einstellen. Drehe mit Standgas diese schrittweise nach links (heraus), wenn der Motor scneller läuft, dann, bis er beginnt unrund zu laufen. Von diesem Punkt eine viertel Umdrehung zurück.  Danach kannst Du das Standgas einstellen.

I did screw the airscrew totally in and then slowly few turns back. How many i forgot to count. But she runs now even at lower revs. So i finally was able to ride around the neighbourhood. Until... a car behind me honked, stopped, lost my licenseplate. Rode the last few hundred meters and found it.
So i was Lucky. But then she wont start......
Let her be for a few minutes and then she started again.

I let her stand on the sidestand while walking to the fallen licenseplate. Noticed petrol leaking from back of carburetor.
Can it be the petrol leaks into the cylinder causing the bad starting?

 Plate run over...

nein, das Benzin kommt aus dem Vergaser. Möglicherweise hat der Schwimmer oder die Schwimmernadel durch die Seitenlage gehangen. Du solltesest beim Abstellen des Motorrades immer den Benzinhahn schliessen. Wenn es erneut passieren sollte schreib mir, dann kann ich Dir sagen wie man das ändern könnte. Volker

No, the fuel is coming from the carburetor. The float or float needle might have gotten stuck because the bike was lying on its side. You should always turn off the fuel petcock when parking the motorcycle. If it happens again, let me know, and I can tell you how to fix it. Volker

Already happy that she runs finally thanks to the help from you guys on this forum!