Last Updated on 10 months by Susan Mayrich
Are you wondering how to adjust tension on singer sewing machine? When it comes to sewing machines, the Singer sewing machine is a popular choice for sewers of all skill levels. They are one of the oldest and most well-known brands on the market.

Singer also has a reputation for producing durable machines that can stand up to years of use, which makes them an excellent choice.
Knowing how to adjust the tension on your Singer sewing machine can be a real lifesaver. For instance, if you are working with very heavy fabric and find that it is bunching up in places while you are sewing, then you should try loosening the tension.
Likewise, your tension may need tightening if your seams are puckering or not lying flat against one another when pressed.
Guide On Adjusting The Tension On Singer Sewing Machine
Follow these helpful steps to know how to adjust tension on singer sewing machine:
#1. Find the tension-regulating dial; the tension-regulating dial is usually located on one of the legs of the machine. You will want to turn this knob in either direction based on your needs, tighter if seams are not lying flat against one another and looser for when you are working with heavier fabrics that may be bunching up around the needle.
#2. Loosen the tension by turning the adjusting knob to the left. This will allow the bobbin hook to move as it winds thread from the bobbin so it can curl under and catch more of it as you sew.
#3. This adjustment will also make your stitches wider for a more relaxed look.
#4. Try stitching a test seam with a scrap of fabric to see how it looks before sewing a larger piece of fabric or project, then adjust accordingly.
#5. Tighten the tension by turning the knob to the right until you feel resistance on your hand, making your stitches tighter and less likely to fray or come undone after many washes.
#6. Try stitching another test seam to see how this adjustment looks, then adjust accordingly.
#7. Test your tension until it’s perfect. Continue sewing test patches until you’ve achieved equal stitches on both sides and the tension is correct.
#8. Once you’re satisfied with the tension, finish setting up your machine and work on your project!
Adjust Your Bobbin Tension If It’s Too Tight Or Loose
#1. Tighten your bobbin tension by turning the adjusting knob counter-clockwise until you feel resistance in your hand.
#2. Try stitching a test seam with a scrap of fabric to see how it looks before sewing a larger piece of fabric or project.
#3. Loosen the bobbin tension by turning the adjusting knob clockwise until you feel resistance in your hand. This adjustment will also make your stitches wider for a more relaxed look.
#4. Try stitching another test seam to see how this adjustment looks.
#5. Sew a straight stitch 3 inches in length. Check the stitching. If the threads are perfectly aligned, they will meet in the center, and only the upper thread will be visible on top and the lower thread on the bottom. If it still needs adjusting, go back to repeat the needed steps.
Frequently Asked Questions (FAQs)
Here are the answers to your questions:
What should the tension be set at on a Singer sewing machine?
The tension on a Singer sewing machine should be between 2 and 3.
How do you know thread tension is correct?
Thread tension is correct when the thread does not lie on top of the fabric and doesn’t get twisted. The thread should lie down lightly against the fabric, but it shouldn’t fall under the needle plate or get wrapped around the spool pinion.
How do you adjust the tension on an old singer sewing machine?
How do I fix the upper tension on my sewing machine?
To fix the upper tension on your sewing machine, please follow these steps:
#1. Thread Needle – Make sure you have threaded the needle correctly. On many machines, there is a threading diagram right on the machine that shows how to thread the needle.
#2. Check Thread Tension – If you think your thread is too loose or tight, go ahead and put it somewhere between 2-3.
Slowly turn the knob (which could be labeled “TENSION” or located under the plate of your machine) and watch how the thread moves. When the tension is correct, you should see a “V” shape between the top and bottom thread. This means that your tension was adjusted correctly.
#3. Check Upper Thread Tension – Throw some scrap fabric under the presser foot to check your upper thread tension. If the thread is too loose, you will see your top thread (the bobbin thread) on top of your fabric. If the thread is too tight, you will be unable to pull it through the machine or out from underneath your presser foot.
How do I lower my tension on a Singer model 401a?
Tension on a Singer model 401a is adjusted by turning the screw on your machine’s top or side.
Where is the bobbin tension on a Singer sewing machine?
The bobbin tension is on the machine’s side, either above or below the presser foot. The tension may be tightened or loosened with the knob or dial.
Why is my bobbin thread not catching?
Is your upper tension too tight? You may need to adjust the upper thread tension by turning the knob on your machine.
How do I stop bobbin thread bunching?
Adjusting the tension of your thread for varying quantities of cloth and yarn is essential. Ensure you use an equal-weight thread in both your bobbin and upper thread. Your tension may be uneven if you don’t, resulting in a bunched-up thread under your fabric. You may also be interested to know about singer sewing machine troubleshooting.
It’s A Wrap!
Now, you’ve known how to adjust tension on singer sewing machine! It’s important to know how you can adjust the bobbin tension on your sewing machine so that it is appropriate for what type of fabric or thread you are working with.
We have provided a few tips above, but if you need more help, there are plenty of videos online which show step-by-step instructions on how to make these adjustments. You may also want to read about how to replace needle on singer sewing machine and Singer sewing machine not picking up bobbin thread.