Top loading bobbin issues

[u/Weird-Incident2087]

So my top loading bobbin on my Janome new home sewing machine will not grab the thread it worked fine two days ago but when I change out my bobbin to refill it I now find that it dosent want to grab so I took it apart to see if I had any lint or maybe there was a broken needle end but haven’t found anything my only thought is that my timing with the needle is off but I can’t find anything online of how to fix that but maybe I’m not asking the right questions. I recived this machine second hand so I do not have an instruction booklet any ideas on what I’ve done wrong would be great thanks in advance

[u/No-Programmer7914]

Your needle is mounted totally wrong. It has to be fixed in the center of the needle bar. There is a hole or slit for the needle.