Fabric, wool and haberdashery
Use a good quality thread.
It’s common for inexpensive low quality threads or threads designed for hand sewing to be the cause of what appears to be tension problems when there is nothing wrong with the machine. For best results use a good quality branded thread.
To check if your thread is suitable for use on a sewing machine.
Thread your machine with the foot raised. The thread should pull through the machine with no tightness. Using thread that does not pull through smoothly can cause thread breakages, poor stitching or damage to your machine.