Adjust The Tension On Your Sewing
Troubleshooting tension problems on your
sewing machine is a simple process that can save you a lot of
money in repair costs. Before you adjust the tension on your
sewing machine, always follow these simple
Get your instruction manual and
check the threading of the upper tension.
Raise the presser foot and, using canned air, blow
out any lint or dirt from between the tension
Remove the bobbin case and check
to make sure that the bobbin thread is in the
bobbin case tension.
Test the machine on a scrap
piece of fabric. If you still have tension
problems, continue with the steps listed
Loose Upper Tension
Figure 1 shows loops on the bottom side of the
fabric. The most common cause of this is loose
needle thread tension. However, if the bobbin thread
tension is too tight the needle thread will be unable to
pull the bobbin thread to the center of the fabric,
causing loops on the bottom of the fabric. While
this is not common, a bent or overfilled bobbin can cause
The most common solution to eliminate
loops on the bottom of the fabric is to adjust the tension of
the upper thread. Tighten the needle thread (upper)
tension by turning the dial clockwise to a higher number.
Take note of the number the upper tension was set on before
adjusting it. Increase the upper tension one number at a
time, testing each setting on a scrap piece of fabric until the
loops are gone (Figure 3).
Figure 2 shows the condition of loops on
the top side of the fabric. There are two common causes
of this problem. If the upper tension is too tight, the
bobbin thread will be unable to pull the top thread to the
center of the fabric, causing loops on the top.
If the bobbin thread has slipped out of
the bobbin case tension spring, you will have loops on the top
of the fabric.
To correct this problem, first remove the
bobbin case and make sure the bobbin thread is threaded through
the bobbin tension spring. If the bobbin case is threaded
correctly, place it back in the machine and loosen the upper
tension by turning the tension dial counter-clockwise to a
lower number. Make small adjustments while test sewing on
a scrap piece of fabric until the loops disappear.
Balanced Upper And Lower
This is what we are looking for!
The needle thread and the bobbin thread are joined in the
center of the fabric. There are no visible loops on the
top or bottom side of the fabric. This stitch produces
the strongest seam.