I am having trouble getting the bobbin to function properly during sewing.

If the thread keeps getting caught on the bobbin case and making a loud clanking noise, it's possible that the bobbin case is not properly installed or is damaged. Here are a few steps you can take to troubleshoot this issue:

1. Check that the bobbin case is properly installed in the machine. The bobbin case should be securely snapped into place, and there should be no wobbling or movement when you gently tug on it.
2. Inspect the bobbin case for damage. Look for any cracks, chips, or burrs that could be catching the thread. If you find any damage, replace the bobbin case.
3. Check the tension on the bobbin case. The bobbin tension should be adjusted so that the thread pulls evenly and smoothly from the bobbin. If the tension is too loose, the thread can bunch up and get caught in the case.
4. Make sure the thread is properly threaded through the machine. Check that the thread is not caught or looped around any of the machine's components.
5. Try using a different type of thread. Some threads are more prone to breaking or getting caught in the machine than others.

If you've tried these steps and are still having trouble, it may be time to take your machine to a professional for servicing

if you are getting loops on the underside of the fabric or jamming around the bobbin, then your top thread is not under tension or going through the thread take up lever, that little arm that moves up and down. Recheck your threading path making sure you always raise the presser foot to open up the tension discs so that the thread lies into the tension discs fully. Also check that you have the bobbin threaded up correctly into the bobbin case, with the thread caught into the tension spring (you will hear a little click as it goes in). The bobbin will turn anticlockwise as you draw thread out of it. Use the top thread to raise the bottom thread up, replace the needle plate and bobbin case cover in place, then take both threads to the back of the sewing area. Hold them firmly as you start sewing! very important that you don't allow the thread tails to be caught and dragged into the bobbin as they will jam around the rotary hook.

I suspect that the bobbin thread you are talking about is in fact the top thread that has been pulled under the material, make sure that the top thread is pulled into the tention discs firmly and that there is no fuzz in with the thread, also make sure the top thread is properly threaded and is actually in the take up bar .

bird nesting indicates that the needle thread tension is not tight enough
pull the thread out as if threading the needle and the tension is close when there is resistance to pulling the thread

The motor locked up because the thread is tangled.
Solution:
Remove the tangled thread before continuing the operation.
Clean the bobbin case to remove the tangled thread.
After cleaning the bobbin case, insert the bobbin case properly.
If the needle is bent or broken, replace the needle.
Then, thread the upper thread properly, and continue the operation.

when the needle pulls the fabric into the feed dog you dont have enough fabric behund the neelde when you srart, and the fabric gets caught in the feed and the bobbin case underneath clean it out anf change the needle they often get bent after they get tangled in the thread and fabric

Hello,
Here are a couple of things to try.

* Un-thread your machine and remove your bobbin. Clean any loose thread or lint out of your
bobbin case. Re-thread your machine, reinsert and re-thread your bobbin.

* Change your bobbin
There could be a nick along the edge of your bobbin spool that’s catching your thread as you
sew.

* When you start to sew a seam, grasp the upper and bobbin thread tails. Hold them back
and out of the way as you sew your first couple of stitches. This will keep them from getting
caught in your machine.

I hope this helps.

your needle may be in backwards

To address my needle thread tangling (horribly) in the bobbin compartment, I rethreaded the bobbin. I cleaned the bobbin and the feeder feet, I changed the bobbin and the thread. I changed the tension on the needle thread and the bobbin thread. NO FIX! Then, I changed the needle - the problem was fixed instantly. I sewed awhile and then put the original needle back in. No problem. I think perhaps that the problem is being caused by the needle getting out of alignment somehow during sewing. If you are having the same issue, try it. It can't hurt!

This is a bit late, could the bobbin case not be seated properly? You need to put it into place and then turn it clockwise until it seats soundly in the opening. Also, check for burrs...the needle may have left a rough mark on the plastic or metal in the bobbin area. A piece of batting, or even an old knee hi should snag on any rough areas.