How do you fix top thread tension?
perfect tension means the stitches look the same on the front as on the back. If the bobbin thread is showing on the top, loosen your tension (decrease the number on your tension indicator). If the top thread is nesting on the bottom, increase the tension (increase the number of your tension indicator).
How do I know if my bobbin tension is correct?
The thread should unwind just slightly and the bobbin case should drop an inch or two. If the thread unwinds without resistance and the case slips to the floor, your bobbin tension is too loose. If the bobbin case doesn’t budge, your bobbin tension is too tight.
What is the upper part of the sewing machine head being driven by hand when starting the machine?
Answer: Balance Wheel/Hand Wheel: Balance Wheel sets the mechanism in motion. It is used to manually raise and lower the needle. This wheel is driven by the motor, but may be turned by hand to adjust sewing needle height.
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.
How do I stop my sewing machine from bunching up?
A good cleaning may solve your bunching woes (check your manual for guidelines on cleaning and maintenance; your machine may also need to be oiled). To prevent stitch glitches, be sure to frequently dust underneath the throat plate and along the thread path, and to periodically clean and oil your machine.