How to Adjust the Tension on a Sewing Machine

How to Adjust the Tension on a Sewing Machine

In this section you will find a lot of advice on how to use the sewing machine.There are tips of repairing, caring and oiling the sewing machine also.
But first of all you need learn how to adjust the tension on your sewing machine and skills for repairing this device.

Bobbin with a different thread color

For easier understanding how to properly adjust the thread tension, I wound the bobbin with a different thread color.

Bobbin case of sewing machine

First you need to rewind the thread on the bobbin and insert it correct into bobbin case. Next you need insert top thread through all guides and into the needle.
Read more about this process in the article How to thread a sewing machine.

How to adjust thread tension

The tensioner scale

The smaller the number on the tensioner scale, the weaker the tension of the upper thread.

The stitches line from below of fabric

When the upper thread tension is low, the stitches line from below of fabric will look like this. A top thread (yellow color) will be visible from the bottom of seam.

The upper side of stitch line

Nevertheless, the sewing line will be beautiful on the upper side.

The normal thread tension

The normal thread tension on the standard thickness of fabric will be if you set the position from 4 to 6.

How to check thread tension

The top thread with normal tension

With such tension, the upper thread (yellow) is no longer visible from the bottom of the sewing stitch.

Sewing with zigzag stitches

In order to correct the tension of the thread in the line, it is necessary to set a zigzag stitches also and sew a little.

How to adjust thread tension for thin fabrics

Thread tension for thin fabrics

Note: For many fabrics so jersey, silk and other sorts of thin fabrics, the thread tension should be changed.

Compressed thin silk fabric

Look at how is tightened the seam and is compressed thin silk fabric with standard top thread tension.

How to loosen the tension of the threads

The silk fabric is compressed on both sides.
To change this, you need to loosen the tension of the threads (sometimes bobbin thread also).

How to adjust bobbin thread tension

How to adjust bobbin thread tension

The thread tension of bobbin is adjuste with this screw. Try not to adjust the bottom thread unnecessarily. See also: Bobbin case device and troubleshooting.
Note: Be carefull, you can unscrew the screw only half a turn, no more.

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