Hi Mizeddie, Welcome aboard. YOu know from your manual that you have a long shuttle machine. And you are blessed with 8 bobbins. That is a score. They should go in a bullet shaped shuttle that fits into an arm that swings back and forth under the bed. You are missing the slide closest to you from the needle, but the shuttle Hopefully will still be in place there. We often call these vibrating suttles or VS machines here.
Examine that wiring very carefully before you plug it in.
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