Greetings pbuchmeuller72,

We have a small language problem, so to save time maybe you should go to the site https://www.xt600.de/ It is the greatest store of XT knowledge. It is in your language, so can help me maybe!

You may find what you are looking for. Even if you don't you will learn much.
And you can come back here anytime for help.

How to start an XT, latest version: start with a good bike

I have been lucky. I am 3rd owner of my '87 2kf, It is standard, i rebuilt the engine and gearbox. No mods before i got it. My policy is to fix anything as well as i can, regardless of cost. Only genuine parts if possible. Found all manuals i needed, with some help from people here.

So the engine needs to be in a good mechanical condition, with clean carbs, good float level and a good spark. No air leaks into rubber inlets and a well set de-compression cable. It's in the manual. Learn to kick the engine from click or TDC. (there is a better description here than mine, to find tdc. top dead centre) Both work. Engine position is critical to start easily.

The settings you talk of: Xts are very fussy about fuel mixture strength. They are often more difficult to start when hot. Flood easily.

Use the advice given; consider what conditions the engine may need to start.
Cold, full choke. Warm, try some, or no choke. You will find that one eventually. Hot, no choke. Always dry the engine if it fails after 2 kicks. Learn how many turns it needs with throttle wide to dry it enough. If many you can set mixture screw leaner and maybe float level lower.

Practice. And tell us how you get on.

best,
p