Hello Kyiav, I have just checked and found that it is the same as a model 27.
Watch all my videos about cleaning machines and threading long bobbin machines. Also I have done a video about adjusting the tension on a long bobbin machine.
If you click on the link you will go straight to my Youtube channel. Also you can click on the link to my blog, where you will find more information. I have posted a fair bit there about shuttles.
Glenn is the person on this board who knows all about cabinets and wood.
Good luck! I'm looking forward to seeing the photos.