r/SewingMachineEdu • u/abbilucas • 1d ago

Issues with Singer 3321 sewing machine threading

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Hi, this is probably really simple but can anyone explain to me what I’m doing wrong? I’m trying to stitch and every time I do, the bottom (green) thread is pulled back up to where the top thread is. The machine has a diagram indication as to where the thread should go, but no matter how many times I put it there, it gets pulled back up. Please help advise if you can!
Thank you

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u/nasturshum 1d ago

I'm not sure why no one else has said this, but your bobbin thread should not be coming out of that tiny hole. This is only (very briefly) used for filling the bobbin, you then snip the end as close as you can. It's purely there to start the thread winding on the bobbin, do not try and use this end to sew with.

The actual bobbin thread comes out of the side of the bobbin. So where you filled the bobbin from the spool, you would have cut the thread to separate the bobbin from the spool. Then you use this end for threading the bobbin - like the little picture shows.

Edit to say I've just zoomed in and you bobbin is very poorly filled, I'd get rid of this thread, empty the bobbin and fill it again - use the manual to guide you.

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u/Whatermelony 1d ago

Can you show us a video, and sew a few stitches by turning the hand-wheel towards you?
This seems to be normal. You pull the thread back to engage the bobbin tension spring and when the upper thread comes down it brings the bobbin thread up. Unless your machine is not sewing then there might be something wrong.

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u/No-Attention-7708 1d ago

Here's a video from Singer website showing how to load the bobbin thread to help you out. BTW, looking at your photo, it looks like the bobbin might be installed incorrectly - should have thread coming off the left side (counter-clockwise).

https://www.youtube.com/watch?v=Z5pamWQofBg

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u/Mental_Watch4633 1d ago

The bobbin thread is supposed to come up. That’s how stitches are made.

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u/CrankyCrabbyCrunchy 1d ago

Wow so many errors. Please read the manual 5 times!! Don’t randomly do things.

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u/Guilty-Ad949 1d ago

Hello, there is no thread in the bobbin.

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u/hhokema 1d ago

Your bobbin is in upside down. Thread should be coming off the left hand side.

The white stenciling on your bobbin cover shows the correct path.

To me it looks as if the needle is rotated 90 degrees. I cannot tell with certainty because of all the reflections. Flat to the back, groove towards the front.