kind of a long shot, my mom’s mobility scooter developed a flat and i’m trying to fix it

feel free to let me know if there is a better community for these kinds of questions

  1. is the valve stem supposed to be loose? is it missing some kind of O-ring, it doesn’t seem to seal to the wheel rim

  2. can I replace the valve stem with an inner tube?

  3. and if someone happened to recognize the model of this scooter that would be nice too, it was just dropped off by a family friend one day with no paperwork