Question about White Sewing 1740 Mechanical Sewing Machine

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My thread on the bottom of the material is in small loops. What am I doing wrong?

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  • Judy Berkley Jan 23, 2013

    I gave up I will have to take it to get it looked at. Thank you everyone for your suggestions.


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  • White Sewing Master
  • 7,365 Answers

Try changing the needle
adjust the top thread tension to stop the loop

Posted on Jan 21, 2013

  • 1 more comment 
  • Judy Berkley Jan 21, 2013

    Yes we tried that but it didn't work, but thank you for your suggestion.

  • try cleaning the top thread tension disk by backing the tension dial off and use a can of air and some unwaxed dental floss or some thread to clean in between the disks, then with the presser foot up try adjusting the top thread tension and see if that will stop the bobbin thread looping, if it doesn't help try adjusting the bobbin tension and and clean in the bobbin area for lint or loose threads, and if that doesn't help then the machine needs to be serviced.

  • Judy Berkley Jan 21, 2013

    Thank you, I will give it a try, I have to get a can of air first.


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What am I doing wrong when the stitching on top of the material is ok and straight and the backside is knotting?

wrong bobbin tension , but amazingly its actually easier to adjust the top threads tension to compensate for it , use your tension knob to slowly adjust , try an inch , slowly adjust try an inch , and so on to get a top and bottom thread tension to match , this will need to be adjusted for each major change in fabric (aka , knits to woven )

Aug 17, 2016 | Sewing Machines

1 Answer

How do I fix the looping under the material when I sew?

the looping on the bottom usually is a tension problem, the top & bottom tension are unequal usually fixed by adjusting the top tension.
some people that I've talked with have had success with changing to a different size needle ( depends what type of thread is being used).
when the machine is threaded the foot needs to be up ( this releases tension on the thread), when the foot is lowered it the tension is set on the thread. if the material being sewed is too thick it raises the foot too high & releases tension on the thread ( the material has to be really thick to do this).
if there a piece of thread or lint in or around the tensioner or bobbin area it could cause trouble.
other wise if you've tried everything you can think of, take it back th the store & have them try it & tell you what is wrong.

also this machine has bad reviews (i'll provide a link so you can read them), people having the same problems as you are. the newer singers just don't seem to be the same quality tha the older ones were.
all bad reviews
mixed reviews

Aug 26, 2014 | Singer 5400 Sew Mate 60-Stitch Sewing...

1 Answer

Cannot adjust my tensions. book is too vague...need help despratly!!!

Hi Karen:

Take a deep breath, count to 10... then slowly let it out. Ok. now. Most industrial machines are basic mechanical machines. Not much to go wrong with them. But they are so basic the manufacturers figure you would almost automatically know how to thread and adjust them.

There are a few things you can check.

I assume you got the needles when you got the machine. Did you know that some machines require left or right twist on the thread? Yes, I know... "Huh?" So first lets make sure your needle and thread match well.

Cut off a length of thread abotu 18 inches long. Take out your needle and thread the eye of the needle. Now hold one end of the thread up... does the needle slowly go down the thread? If it goes fast the eye is too big for the thread. If it slips and stops... the eye is too small for the thread. In either case you need different needles for this thread.

Next, In your instruction book... really study those pictures. Almost all machines require that the bobbin be inserted with the thread unspooling off the bobbin in a certain direction. Insert it wrong and it does strange things with tension and your loop.

Next... make sure you have threaded it correctly. This means lifting the presser foot lever while threading... make sure you are in between those tension discs. (I've had a machine that required that I wrap it 1.5 times around a tension disk... so make sure you are really studying those diagrams.)

Remember. Loops on bottom of material mean top tension is too loose. Loops on top of material means top tension is too tight and perhaps the bobbin tension needs adjusted (loosen top tension first!)

I hope you got the servo motor instead of the clutch motor.

Good luck

Sep 14, 2012 | Tacsew Gc66 Sewing Machine

1 Answer

The cotton on my bernina 801 keeps jamming

Loops on bottom indicate a top thread tension problem.

Make sure needle is the correct size and not bent or broken
Make sure it is threaded properly with the lever UP.

Do a test stitch.

If it still loops below... tighten the top tension and do another test stitch... keep doing this until the stitch is balanced.

BTW... always grasp and hold both threads when starting a seam.

Jul 30, 2012 | Sewing Machines

1 Answer

The wrong loops are on the surface of the material that I've sewn

Loops on the top of the fabric are usually caused by the bobbin thread not in the bobbin case tension correctly, remove the bobbin and reinstall it. You should feel a slight resistance when you pull on the bobbin thread.

May 29, 2010 | Brother CS6000i Computerized Sewing...

1 Answer

Bernina bernette just stopped sewing . have rethreaded many times . both needless put thread through material but the looper thread does not get caught by them top or bottom , so no loops are formed...

Blue red green yellow threading order is very important. Pull all threads from eye of the needles and both lower loopers and thread in that order.

Jul 30, 2009 | Bernina Sewing Machines

1 Answer

Machine is threaded but thread not sewing into material, just holes!

Check bobbin thread....Insert the bobbin thread into the bobbin case in a clockwise direction...pull the thread through the **** on side of bobbin case and slide up into small opening...make sure you pull through about 2 inches of thread to enable upper thread to loop. Good Luck

May 10, 2009 | Sewing Machines

1 Answer

Thread on bottom, bobbin thread loose

Sounds as though you've misthreaded the upper tension. The best way to verify this would be to thread your machine, lower the presser foot on to the material. Now try pulling the thread through the needle. (Assuming your upper tension dial is set to a number greater than one). You should feel resistance. Should you not feel resistance, rethread your upper tension.

Feb 01, 2008 | Singer 6038 Mechanical Sewing Machine

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