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Tension assembly diagram needed.

Bless you! I need a detailed diagram for the upper tension assembly and the bobbin assembly for a singer 4528 I am trying to repair. Thanks!

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  • Anonymous Mar 24, 2014

    TOP TENSION ASSEMBLY DIAGRAM

  • Anonymous Mar 24, 2014

    MODEL 921 TENSION ASSEMBLY DIAGRAM

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Http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Singer_Sewing_Machine_Threading/singer_4526_4528_4530_threading.htm

If you go to this site, you can find some pictures and buy a manual fo around 10.00, the manual should have the pictures of the tension in each piece.

hope this helps
moni

Posted on Sep 24, 2009

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I need elp with tension on singer cg550


You didn't explain the symptoms. Is the thread bunching, looping, knotting under the fabric? Is the bobbin thread rising to the top of the fabric?

If it is bunching under the fabric, it is probably what is called thread nesting or bird nesting. There are several fixes, sometimes more than one fix is required to resolve the issue.

Be sure to clean under the needle plate, around the bobbin, and the feed dogs. If the machine has instructions for oiling, follow the directions using a fresh, good quality sewing machine oil and apply only 1-2 drops each spot.

Install a brand new needle. Make sure you are using a needle compatible with the thread and fabric being used. All About Needles
Best practice is to use the same thread in both the upper and bobbin. Also, avoid old or bargain bin thread. Spend an extra couple of dollars to reduce frustration and increase success with your machine. If you wish, you may use two different colors of thread to test so you can easily determine what is happening with the tension.

Remove the thread from the machine. RAISE the presser foot and rethread from the beginning--the thread needs to be seated firmly in the tension disk. Verify that the correct thread path is followed (consult the owner's manual).

Set the upper tension to the midway point between high & low numbers (this is the factory standard and is a good place to start, but every machine is different and may need adjustment).

Confirm that the bobbin is installed in the bobbin case (turning the correct direction) and that the bobbin case is threaded properly.

Before beginning to stitch, hand rotate the handwheel one rotation and pull the bobbin thread to the top of the fabric. Then, gently hold the thread tails in the left hand and slowly begin to stitch.

Test.

If thread is bunching, looping under the fabric, the upper tension is too loose. Tighten it and retest. On most machines, the lower the tension number, the looser the tension.

If the bobbin thread is rising to the top of the fabric, the upper tension is too tight. Loosen the upper tension and retest.

Keep adjusting and testing until it is where you want it. Generally, tension is correct when both threads (upper & bobbin) meet in the middle of the fabric. FWIW, tension is static and should be tested and readjusted every time a new project is begun. The needle, thread, and fabric will affect the tension, so it is important to get comfortable adjusting the tension.

Also found the following reviews. Appears that some users have had tension issues with their CG550.

Amazon com Customer Reviews Singer CG 550 10 Stitch Commercial Grade...

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send ur exact model and brand name ..will get ur schematic diagram soon

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I am not sure about this particular machine but in most machines there will be a nob on the front loose low numbers like 0 1 -2 work well on number 3. If the nob is not on the front check and see if it is on the side.

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1 Answer

I have singer 4423.The needle thread in bunching up in the bobbin case and not sewing! When it didn't pick up bobbin thread I loosened bobbin tension which fixed that problem.


Sounds like bird nesting.

Install a brand new needle.

Remove the upper thread completely. RAISE the presser foot and rethread from the beginning. Make sure it is threaded correctly according to the manual.

Set the upper tension to the midway point between high & low numbers. Retest on a scrap of fabric.

P.S.--once you get the upper tension correct, you may find you will need to readjust the bobbin tension.

Also make sure that your needle, thread, and fabric are compatible.

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:) If you are nesting below the fabric and in the bobbin area... that is an upper tension problem. Tighten the upper tension... and try again.

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Have singer sewing machine that the tension on the bobbin isn't very good no matter what i turn the tension to. the model # is 221K1 or 221-1 it seems like it is also needing oiled down there but don't...


99% of the time its not the bobbin tension its the tension on the upper thread that is off. Try rethreading the machine and then adjuat the upper tension slowly if needed. The bobbin area does need to be cleaned quite often usually every 8 to 10 hours of sewing and its simple to do. Remove the bobbin and look closley at the bobbin casing there are two latches holding it to your machine, one on either side you push them gently to the side and the case will come out, clean and oil entire area and replace the case and push the latches back into place and then replace bobbin in machine aalways use scrap material for a few minutes to make sure everything is good to go and that no oil gets on you project. any machine oil is ok to use its not necessary to use sewing machine oil and a small bottle will last for a long time.

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Hello,

If you have Increased the upper thread tension on your machine, try these solutions.

* Decrease your bobbin tension if your sewing machine allows you to adjust it. Consult your manual.

* Re-thread your bobbin, It may be threaded incorrectly.

* Reinsert your bobbin, It may be inserted incorrectly.

* Change your thread. If your upper thread and bobbin threads are different types, try using the same thread for both.

I hope this helps.


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tension issue,,,,,upper tension assembly needs to be adjusted, either the machine is not being threaded correctly or tension assembly is bad,,,

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