Question about Singer Curvy 8770 Electronic Sewing Machine

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Top thread tension not working on singer 8770. not sure I am threading it right. hard to read diagram. A real picture would be nice.

No matter where I turn tension dial, still looks the same. Bottom looks fine, top too tight.

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  • Singer Master
  • 9,981 Answers

Here are a couple of videos that may help:

http://www.youtube.com/watch?v=zAgpkUa06dgSinger Curvy Threading


Singer Curvy 8763 8770


www.singerco.com/uploads/download/1205_8770-f-b-chart.pdf

Posted on Apr 28, 2015

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Posted on Jan 02, 2017

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Related Questions:

2 Answers

The upper thread tension keeps breaking the thread, no matter how low I set the tension. How do I fix it?


Not a technician, but I had same issue not long ago, it was old dried out thread. Once I replaced with new thread, no more issues. Something easy to try. Also might want to double check to make sure no thread is between the pressure plates. I use canned air to spray them out once in a while between annual cleaning.

Apr 21, 2016 | Singer 8770 Curvy 225-stitch Computerized...

1 Answer

My singer curvy 8770 keeps beeping and stops I have cleaned it retarded threaded it sews for a minute then beeps then stops continues.this machine is only 3 months old I need some answers


Are you getting any error messages? This page may help: http://www.manualslib.com/manual/364636/Singer-8770-Curvy.html?page=30
It would be something really simple like the bobbin winder not completely in the right position. I hope the troubleshooting page will help.

Jan 17, 2015 | Singer Curvy 8770 Electronic Sewing...

1 Answer

Whta is the answer to the curvy's thread/bobbin problems. super infuriating


If by "bobbin thread is usually too loose." you mean that you are seeing loopy stuff on top of your seam... then first you need to make sure your bobbin is un-spooling in the correct direction.

Also make sure that the tension spring on your bobbin case is not missing it's screw. Don't mess with the tension there yet... loosen your top tension first... sew on scrap fabric of the same type as your project. Loosen the top tension until you stop seeing loops on top of your seam. If you have loosened it enough to see loops on the bottom... tighten it a bit.

If all else fails make sure you re-thread the top thread with the pressure foot up position so you make sure you are getting the top thread in the tension discs and try test sewing again.

Jul 26, 2012 | Singer Curvy 8770 Electronic Sewing...

1 Answer

The stiches at the botton are loose,it sound good at sewing but somehow it still a real mess ,no matter how i tried all different adjustment in the control bottons..


Looping on the underside is an indication that your top thread is not under tension. So you need to check again on the top threading up and make sure the thread is seated into the tension discs. Always thread up with the pressure foot raised to open up the tension device. Make sure the thread goes into the tension device, to test, lower the pressure foot and pull on the thread downwards - it should feel firm and resist pulling. If you can't get any tension onto the top thread, then the tension device may be broken.

You should not need to adjust the bottom tension at all.

If a machine is set up correctly the top tension should only need finessing by half a number at the most.

Sep 24, 2011 | Singer 5050 Mechanical Sewing Machine

1 Answer

My singer curvy 8780 has a timing issue the needle is scraping on the bobbin casement and will not sew,cleaned and oiled, changed needle turned off and on. any suggestions?


Good day!

please try this simple tips:

Good day!

A sewing machine operator can often help themselves when their machine does not operate properly.
Here are some simple instructions, which if properly used can save time and mechanics service calls.
TROUBLE;UPPER THREAD KEEPS BREAKING;
This could be trouble;================Do this;
1.Top tension to tight================loosen tension 1 turn
2.Machine improperly threaded=========check threading
3.Thread twisted on guide post========"
4.Thread twisted out of tension======="
5.Take up spring bent or broken=======Check action of spring
6.Thread jumped off pull off finger===Check threading
7.Needle bent or burred===============new needle
8.Bad cone of thread==================try another cone
TROUBLE;LOWER THREAD KEEPS BREAKING;
1.Bobbin tensionspring to tight=======Loosen tension slightly
2.Bobbin threaded wrong===============check threading
3.Bobbin wound to tight or uneven=====try new bobbin
4.lint or thread on bobbin case=======clean inside case
5.Lint or thread inside hook==========clean inside hook
6.Bobbin case nicked bent or burred===check/change case
TROUBLE;MACHINE STARTED SKIPPING STITCHES;
1.Needle bent or burred===============change
2.Needle set in crooked===============Check
3.Thread jumped off take up spring====check threading
4.Thread jumped off pull off finger===check threading
TROUBLE STITCHES SHOWING LOOPS;
1.Forming loops on top of cloth=======Tighten bobbin tension
======================================or loosen top tension.
2.forming loops on bottom of cloth====Tighten top tension
3.Bobbin placed in case incorrectly===remove and replace
4.Bobbin thread slipped from under====check threading of
tension===============================bobbin case
5.Lint or thread in top tension=======clean between tension discs


Thank you and good luck.

Jun 06, 2011 | Singer Curvy 8770 Electronic Sewing...

2 Answers

I recently rec'd Singer Curvy 8770 as gift. Trying to use for first time and thread on underside of stitches is loose. Have tension on top dial as far as 9. I hve been sewing for forty+ yrs.


Try this, totally rethread with the presser foot up, then pull the top thread, it should move smoothly, then lower the presser foot, now pull the thread, it should barely move. This seats the thread in the tension discs.

Apr 11, 2011 | Singer Curvy 8770 Electronic Sewing...

1 Answer

I have a Singer Merrit4530 and it is working well except for the tension. It looks fine on the top,but is terribly loose on the bottom. I do not have the manuel.Can you help me?


Yes, I can help you, first off, go to www.singerco.com and under the customer support tab, click instruction manual, now enter 4530. You can download your manual for free and enlarge diagrams to see everything really clear for threading etc. Now make sure that you save a copy of it to your computer, maybe even print one out. Now you will never be without a manual.
Now, back to the stitching problem, rethread, according to your manual, do this test, with the presser foot up, pull on your top thread, it should feed smoothly, put the presser foot down and the thread should barely move when pulled on. This usually seats the thread in the tension discs for you.
When the stitches are not right on the bottom it is almost always the top threading.
Take a deep breath, read your manual with a nice cup of tea and relax. Happy sewing and good luck

Nov 16, 2010 | Sewing Machines

1 Answer

My bobbin stitch is loose. I have tried adjusting tension and have changed the needle.


A. To correct loose stitches, try the following: (1) Balance the thread tension. If the stitches are loose on top of the fabric, decrease the tension to the next lower number. If they are loose on the underside set the tension to the next higher number. (2) Make sure the needle/upper thread follows the threading path. (3) Check to see that the bobbin case is threaded properly. (4) Use a different size needle. For fine fabrics, use a smaller needle (size 9, 11); medium-weight fabrics require a size 14 or 16. And use a size 18 or "Denim" needle for heavy corduroy or denim.

Sep 20, 2010 | Singer Curvy 8770 Electronic Sewing...

1 Answer

I can't seem to ever get the tension right on my "singer simple". no matter what i do, the stiching is a problem. this is my second machine with the same problem, is this a mfr defect or...


Probably operator error. Make sure the machine is threaded right, make sure the bobbin is threaded properly, change the needle.... even though you think the needle is sharp. Make sure you are using the right thread. If you have bargain thread, throw it out. Use Coats & Clark, which is still reasonably priced. My friend has a lower end Singer that was acting up ... loose threads on the bottom of the fabric, which means upper tension .... we did the simple thing of changing the thread. It worked, and the machine is sewing beautifully.

Apr 14, 2008 | Singer 3116 Simple

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