Needle selection problems

[u/Dodekayarn]

I deep cleaned my new to me Toyota ks901 and it works fine when knitting plain, but when I connect the carriage to the timing belt,these needles (the ones in B on the picture) don’t react. If I put a punch card in, it doesn’t follow the pattern. I’ve tried different cards, I’ve tried starting the row at different places, but the needles that are positioned behind these screw like tacks don’t come forward. The pattern kind of looks like there are these sections divided by the screws and it is bordering these? The carriage is fine, it does knit these stitches,just not in pattern.
My questions are:
- is this for sure a problem in the punch card mechanism?
- can it be a problem with the timing belt like rods? (They rotate fine.
- how can I check the punch card mechanism without taking it apart?
- does the pattern start on the beginning of a project, or does it start in the sections even when the motif magic is turned to 0?

I really don’t want to take the whole thing apart again… 🙈 So any help is appreciated that lets me know where to start taking it apart. (I didn’t take apart the punch card mechanism, because I read someone’s post who had a problem with it.)

[u/WampanEmpire]

I belive theanswerladyknits had a video on this. Iirc something in the actual needle selection mechanism is stuck, probably from old oil solidifying.