Why Does My Sewing Machine Keep Unthreading

Why Does My Sewing Machine Keep Unthreading?

One of the most frustrating issues that sewers face is when the machine keeps unthreading. It can happen for several reasons, ranging from incorrect threading to a malfunctioning machine part.

In this response, we will explore some of the common causes of why a sewing machine keeps unthreading and provide possible solutions to help you troubleshoot the issue. You may read also Why Is My Sewing Machine Not Moving The Fabric

4 Reasons Why Does My Sewing Machine Keep Unthreading

1: The Take up Lever Isn’t at the Top

Sewing machines are intricate devices that require proper handling and maintenance to ensure smooth and efficient operation. If your sewing machine keeps unthreading, it can be a frustrating and time-consuming problem to fix. One common reason for this issue is when the take-up lever isn’t at the top. The take-up lever is a mechanism that moves the thread up and down as the needle goes through the fabric, and if it’s not in the correct position, the thread can slip out of the needle, causing it to unthread.

When the take-up lever isn’t at the top, it means that the needle is not in the correct position to form stitches properly. This can happen for a variety of reasons, such as the machine being improperly threaded, or the thread tension being too tight or too loose. It’s essential to ensure that the take-up lever is always in the correct position before starting to sew to prevent thread from unthreading.

To fix this issue, start by turning off the sewing machine and removing the fabric from the needle. Next, raise the needle to its highest position using the handwheel or the machine’s built-in function. Check the take-up lever to ensure it’s in the correct position, which should be at the top of its stroke.

Once the take-up lever is in the correct position, rethread the needle and adjust the thread tension if necessary. Start sewing slowly and check to see if the thread is still unthreading. If it is, check for other possible causes, such as a bent needle, a dirty machine, or incorrect threading. By addressing the root cause of the problem, you can ensure that your sewing machine works correctly and prevents thread from unthreading.

2: The Machine is Not Threaded Correctly

If your sewing machine keeps unthreading, it could be due to several reasons, but the most common cause is that the machine is not threaded correctly. Threading your sewing machine correctly is crucial to its proper functioning, and any mistakes in the threading process can lead to problems such as thread breakage, skipped stitches, and, in your case, the thread continually coming unthreaded.

When threading your sewing machine, it is essential to follow the instructions in the user manual carefully. This will ensure that you thread the machine correctly and avoid making any mistakes that could cause problems. You should also make sure that you are using the correct type of thread for your machine and that the thread is compatible with the fabric you are using.

Another factor that can cause your machine to keep unthreading is the tension settings. If the tension is too high, it can cause the thread to break, and if it is too low, the thread can come unthreaded. Therefore, it is crucial to adjust the tension settings according to the thickness of the fabric and the type of stitch you are using.

In addition to incorrect threading and tension settings, there are other reasons why your sewing machine might keep unthreading, such as using a blunt needle, incorrect bobbin winding, or a dirty machine. To avoid these issues, it is important to maintain your sewing machine regularly by cleaning it and changing the needle regularly.

3: There Is A Problem With The Thread or Needle

If your sewing machine keeps unthreading, it could be due to several reasons, one of which is a problem with the thread or needle. The thread could be breaking or slipping out of the needle eye due to tension issues, poor quality thread, or incorrect threading. If the thread is not correctly placed in the tension disks or the spool pin, it can cause it to slip or break easily. The needle could also be causing the thread to unthread, either due to incorrect insertion or damage.

Another issue could be the type of fabric you are using. Some fabrics, such as silk and satin, are slippery and require a special needle and thread to prevent the thread from slipping out of the needle eye. If the needle and thread are not suited to the fabric, it could cause the thread to unthread.

It is also important to check the bobbin when experiencing issues with thread unthreading. The bobbin should be correctly wound, inserted and threaded for the machine to work correctly. A poorly wound or inserted bobbin can also cause the thread to unthread.

In summary, if your sewing machine keeps unthreading, there may be several reasons, including issues with the thread or needle, incorrect threading, poor quality thread, incorrect needle type or size, and improper bobbin insertion. Regular maintenance, careful threading, and using the correct needle and thread for the fabric can help prevent thread unthreading and ensure smooth sewing. You may read also Best Juki Sewing Machine

4: There is a Tension Problem

A sewing machine that keeps unthreading can be a frustrating problem for any sewer. One of the most common reasons for this issue is a tension problem. The tension in a sewing machine is what regulates the amount of thread that is released while stitching. If the tension is too loose or too tight, the thread may not be held in place and will eventually come unthreaded.

There are several reasons why a tension problem may occur. One of the most common is a mis-threaded machine. If the thread is not correctly threaded through the tension discs, it will not be held in place and may come unthreaded. Additionally, using the wrong type or weight of thread for the fabric being sewn can also cause tension issues. For example, using a heavy thread on lightweight fabric can cause the tension to be too tight, leading to thread breakage or unthreading.

Another reason for tension problems can be a malfunctioning tension mechanism. Over time, the tension discs or springs may wear out or become damaged, leading to inconsistent tension or thread breakage. In this case, it may be necessary to have the machine serviced or repaired by a professional.

It’s important to note that different types of stitches may require different tension settings. For example, a straight stitch may require a different tension than a zigzag stitch. Refer to the machine manual for recommended tension settings for different types of stitches.

A tension problem is a common cause of a sewing machine that keeps unthreading. By ensuring that the machine is correctly threaded and using the appropriate thread for the fabric being sewn, most tension issues can be avoided. If tension problems persist, it may be necessary to have the machine serviced or repaired by a professional.


In conclusion, there can be several reasons why a sewing machine keeps unthreading. It could be due to incorrect threading, a dull needle, improper tension, or using the wrong type of thread. It is important to carefully follow the threading instructions in the manual and ensure that the needle is properly inserted and tightened. Additionally, using the correct type and weight of thread for the fabric being sewn can also prevent the machine from unthreading. Regular maintenance and cleaning of the machine can also help avoid this issue. By taking these steps, one can ensure that their sewing machine runs smoothly and efficiently without any thread breakage or unthreading. You may check also Why Is My Sewing Machine Jamming


How do you stop needles from Unthreading?

To prevent needles from unthreading while sewing, ensure that the needle is correctly inserted and tightened in the machine. Use the appropriate needle for the fabric and thread type, and avoid pulling the thread too tightly while sewing. Additionally, rethread the needle often to avoid a loose or frayed thread.

What tension should my sewing machine be on?

The appropriate tension for your sewing machine depends on various factors such as the type of fabric you are using, the type of thread, and the stitch you are making. It’s best to consult your sewing machine manual or do some test stitches on scrap fabric to determine the right tension for your specific project.

Why does my thread keep popping out ?

Your thread may be popping out due to a few reasons: incorrect threading technique, thread tension issues, worn-out or incorrect needle, or using the wrong type of thread for your fabric. Check your machine manual and experiment with different techniques and thread types to solve the issue.

What is the solution if the needle comes unthreaded with beginning a row of stitching?

If the needle comes unthreaded at the beginning of a row of stitching, the solution is to rethread the needle, ensuring that the thread is securely in place before continuing with the stitching. It may also be helpful to use a knot or backstitch at the beginning of the row to prevent the thread from coming loose again.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *