Thread tension problems can be some of the most frustrating issues you could deal with when using any sewing machine from a basic model all the way up to a more advanced machine like the Janome Horizon Memory Craft 6600P.

Sewing machine tension issues can cause poor stitch construction, thread breakage, and other problems that affect the quality of your project and leave you wondering what went wrong and what can fix it!

Thankfully, fixing thread tension issues on Janome sewing machines is pretty easy.

Once you learn how to recognize a tension issue and which thread is causing the problem, you can get it all fixed in no time at all!

What Do Thread Tension Problems Look Like?

Since your sewing machine uses two threads consisting of a top thread and bobbin thread, you could have a tension problem with one or the other.

Therefore, fixing your tension issue involves figuring out which thread is problematic and then determine whether that one is too loose or too tight.

You can diagnose thread tension issues by looking carefully at your stitches, keeping in mind that normal stitches show only the top thread on top and the bobbin thread underneath.

If you see any of these symptoms, there is a tension issue that needs correcting:

  • Top Thread Too Tight or Loose - A top thread that is too tight looks like it passes straight across the top of the fabric while the bobbin thread is pulled to the top and visible on the right side of the project.
  • Bobbin Thread Too Tight or Loose - Conversely, when the top thread is pulled all the way through the fabric so it shows on the wrong side and the bobbin thread is straight across the fabric, it means the bobbin thread is too tight.

How Do You Fix Identified Tension Problems?

Before you head over to do anything with the tension dial on your Janome Horizon Memory Craft 6600P, there’s a few other things to check into that could be causing your tension problems and not the actual tension adjustment itself:

  • Are you using the right needle for your fabric and is it sharp, unbent, and the right size?
  • Is your Janome sewing machine clean under the needle plate and properly lubricated?
  • Is the presser foot installed correctly?
  • Are the top thread and bobbin both threaded correctly?
  • Are all your machine parts like the bobbin case, tension discs, tension assembly, throat plate, and other parts all in good working order and properly installed?

If you can answer yes to all of these, then you can move on to adjusting the top or bobbin thread tension so your stitches turn out correctly.

If the top thread appears to be the problem, turn the tension dial on the tension assembly that is usually on the front of the machine to loosen or tighten the top thread.

If the bobbin thread seems to be the culprit, tighten or loosen the screw on the outside of the bobbin case to adjust the bobbin thread.

In either case, make tiny adjustments and test them out each time until the stitches come out perfect and both top and bobbin threads are in balance.

Thread Tension Problems Wrap-up

When your stitches come out too tight or too loose, it affects the entire project you’re making with your sewing machine.

When you start to have stitch quality problems or even experience frequent thread breakage, diagnosing and fixing a thread tension issue is as easy as following the simple tips shown here!