ZNEN – ZN50QT-E – Scooter does not start and does not attract fuel

Moin Together, I bought the above mentioned scooter for the first time crafting. I had the problem at first that he didn’t even give a tone when starting. Then I found this broken glass tube. I have now bridged this and see, at least he tries to tackle it. Now to my first question, does someone know what the tube is? Unfortunately, I have now found that the carburettor does not even get fuel. The carburettor itself is, after opening, peeling The only thing I haven’t been able to check yet is the spark plug, because it’s so hard to reach, I have to wait for the right tool But can it be due to the spark plug that no fuel is pulled or maybe something else ? Or does that mean that the engine can’t produce a vacuum, what does the engine mean is in the ass? A lot of clean. Thank you for the help already! Sincerely, Luke