The thread could jam due to various reasons which include; the machine is clogged with lint or other debris. If the machine is not threaded properly, it could easily jam. Similarly, a tight tension in the bobbin area or the machine not being oiled regularly could be the culprit.
How do I fix bobbin thread bunching up?
How to Fix Bobbin Thread Bunching and Other Threading Problems
- Thread the Machine Properly. Re-thread the upper part of the sewing machine making sure the thread is passing through every single thread guide on its way to the needle. …
- Change the Needle. …
- Inspect the Bobbin. …
- Clean the Machine.
Why does my sewing machine keep jamming underneath?
However certain you are that the problem with the machine is most likely due to a huge tangled mess of thread in the bobbin underneath the fabric, the most common reason for the jamming is usually the lack of sufficient tension in the upper thread.
Why does my bobbin thread keep getting stuck?
This can be caused if the top thread tension is too tight, or if the bobbin thread is not in the bobbin case tension. … Make sure the bobbin is correctly seated in the bobbin case (bobbin holder), and check that the upper thread tension is not set too tightly.
How do you adjust bobbin tension?
To tighten your bobbin tension, turn the tiny screw on the bobbin case a smidgen clockwise. To loosen bobbin tension, turn the screw counterclockwise. A quarter turn or less is a good place to start.
Why does my singer simple keeps jamming?
As dramatic as it may be, jamming is a very common problem for a sewing machine. Your first step toward a remedy is to remove any fabric you were trying to sew. … Before you start sewing again, check your sewing machine needle. Even a slightly bent needle can cause a thread jam.
What number should the tension be on a sewing machine?
As the bobbin thread tension is factory-set and wouldn’t usually be adjusted for normal sewing. So we’ll be talking only about the top thread tension since that’s where you’d usually make the adjustments. The dial settings run from 0 to 9, so 4.5 is generally the ‘default’ position for normal straight-stitch sewing.