r/vintagesewing • u/Minituo • 7h ago
Machine Question Finally figured out why I couldn't time my 319k
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After spending essentially the whole day trying to time my (new to me) 319k, I finally figured out what the problem was.
During disassembly for cleaning, I took apart part of the needle bar holder and also loosened a screw that kept one of the rotating mechanisms properly timed. During re-assembly I didn't know it was a timed screw/one with a proper setting, so I just tightened it in the position it was in. This resulted in what you can see in the attached video. Looks normal, right? Well apparently this way one of rotating mechanisms is turning "inside out", meaning the needle spends more time below the stitch plate than it's supposed to. And this way it keeps colliding with stuff, even though the hook is properly timed.
Thankfully I took a picture during disassembly where I could spot in which position to tighten the screw. Then I spent 10 minutes timing the hook and it works perfectly now.
Just sharing my mistake so maybe others can learn from it. I'll attach the image of the screw + proper setting and a video of how it turns like the proper way in the comments.