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Singer 4620c thread tensioner spring

How to order or and replace the small spring between the tension disc on a 4620c

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 106 Answers

SOURCE: Tension disc assembly - sewing machine

Sorry but there is no way to explain how to re-assemble the tension mech on here, you need to be actually shown or have someone do it for you. It is very fiddly and needs to be exact, can I suggest you get in touch with a sewing machine tech who(at cost) will sort you out.
Sorry I cannot be of any further help.
Rob

Posted on Mar 29, 2008

bargainbox
  • 1388 Answers

SOURCE: SINGER 9836 tension mechanism doesnt work. stitches sew wrong.

Ensure that all is clean and free of lint and jams, this is the most likely cause....now for tension troubleshooting .......

This solution is for tension problems...if you cannot form any sort of stitch, the issue is quite different, so please let me know if you need a different problem solved.....

It is quite long, but just work through each section in order.
The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.

QUICK SUMMARY FIRST:
Ensure sharp new needle,
Thread guides and Bobbin are Clean & Clear of lint
Set Top Tesion to 4 ....then....
Balance Bobbin to suit.

TOP THREAD TENSION:
If the looping threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your
projects).

IS YOUR NEEDLE SHARP ?
If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !

TOP TENSION & GUIDES:
Make sure that when you thread the machine the presser foot is up so the thread goes between the discs and not to one side, top tension between 4 and 6, and that you have threaded through all the guides, including the last one, usually on the needle arm, just above the needle clamp.

It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.

If tensions appear correct, and the thread is definitely in the channel between the discs, but still too loose and looping, try raising presser foot and remove your thread.

Now, with a 2" (50mm) wide strip piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or denatured spirit, gently insert the fabric strip and clean between the discs with
a see saw / to and fro action.

In the worst cases, gentle use of a needle to pick & remove the jam may be necessary, but be very gentle and make sure the tension is set at Zero and the presser foot is raised, (to
disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.

BOBBIN TENSION:
Far less common, but if the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension.

I would not recommend fiddling with bobbin tension without good reason, it may end up with missing small screws and spring pieces, however, you can take the needle plate off to clean
the hook race area (where bobbin case sits)

...this is just good housekeeping, my wife does this every time she replaces the bobbin....

just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint. If there is a significant amount of lint, use a vacuum and small brush to get the worst.

Then wipe all this area with a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit, especially if there appears to be fine dirty deposits....oil and lint combine to conspire against you.

If it seems likely that you ......really ....do .....actually .....need .....to adjust the bobbin case, first check there is no lint trapped in the metal spring where the thread is tensioned.

TOP LOADER:
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....

4c76dc1.jpg ...the other screw at one end is holding it all together, so beware....it is not a tragedy to undo the whole lot and clean it, but very gingerly and lay the bits out in sequence and orientation, or you risk tearing your hair out !

FRONT LOADER:
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all
back properly.
165ca5c.jpg FINISHING UP
GETTING THE BALANCE RIGHT:
When you are certain there's no trapped lint in top tension or bobbin, set the top tension to 4 and the bobbin tension to a point where you just begin to feel resistance.

Try using good quality thread of contrasting colours so you can more easily spot the changes.

Set your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5 etc) and sew a sample for a few inches and check the result.... adjust the bobbin tension screw very little at
a time, perhaps 1/16 of a turn.

You may find you are playing with this balance for some little while and if you are putting the needleplate on and off each time begin to think it cannot be correct to do this.....BUT....it is,
and eventually, you do get a "feel" for the correct tension and then it happens quite quickly.....as a user you won't be doing it very often unless there is lint built up (or are there small hands at work around the house !?!?!)

OTHER ISSUES:
If you live near the ocean as we do, salt air can play havoc with metalwork inside and out, so to help minimise this, keep a few small packets of dessicant (silica gel) in your machine
case....no case ? then make some sort of cover !

Same applies in any damp or humid environment, keep your machine dry and dust free.

Budget for a proper full service every couple of years (more often if heavily used) and if you don't use your machine for a few years, be aware that old oil will dry out and combining with
dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)

FINALLY, A WORD ON THREAD:
If it is worth spending the time, energy and money on making something that you would like to give lasting enjoyment......use quality thread, .......it may seem to cost a little more at the
time, but the results, ease of use and added longevity will be worth the extra, and as a bonus, your tension troubles may be fewer and further between, because there is a more consistant diameter with good thread, and less compensating to be done by your tension plates and less thread breaks !

If you want any more help with this, just post back here, or, drop a line through the "Contact Us" page at www.bargainbox.com.au


Posted on May 28, 2008

  • 7 Answers

SOURCE: How do i set thread tension on a 306W Singer

Top tension about 4 or 5, make sure the presser foot is up when you theread the machine, make sure you can just pull the bobbin thread through with some slight resistence, if it is too tight slacken the screw on the bobbin case a quarter of a turn at a time anti clockwise.

Posted on May 06, 2009

Australian S
  • 46 Answers

SOURCE: Replace the needle thread tension dial

If the entire assembly has fallen out you will find if you remove the top left hand cover that there is a small screw in the casting where the tension assembly goes, replace the tension body to the correct position and tighten the little screw.

Posted on Jul 02, 2009

  • 9 Answers

SOURCE: burnette 65 bobbin tangling can't adjust thread tension

Have you replaced the needle with a new one? Your needle may be bent or in wrong, or the wrong size. You may have a bad needle. Check that the upper thread path is running freely and is not tangled or wrapped around anything. Make sure that the bobbin is unwinding in the correct direction as well, most bobbins, this is clockwise as the bobbin faces you. If you are using inexpensive thread, it could be the thread that is the culprit. Uneven thread in the needle will not flow through the needle properly, and cause bunching as well. Save it for the bobbin, and use good thread in the top.

Posted on Jul 17, 2009

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7 Answers

TIming Consew 210


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.

Aug 27, 2008 | Consew Sewing Machines

1 Answer

How to thread it and how to replace the spring on the tensioner


1. It always goes in this order: tension, take up arm, needle arm, needle.
2. In between this order there are guides to feed the thread through.
3. Attached is a general guide how tensions are assembled.
4. The main thing to remember is you are trying to get the tension disc with skinny ends towards each other. This is where your thread will go in order for "tension" to be created on your thread.
5. The check spring has to be pushed in at the right area in order for pressure to be made. This is a test type area. However, you pull it out and push it back in until you feel it is right.

25854874-hafdc2rdcntqscfnhauj3sx5-2-0.jpg

Sep 08, 2015 | Brother Sewing Machines

1 Answer

The zig zag stitch is on the bottom of the fabric instead of the top how do I fix this for a Singer sewing machine model 7015


In two words, this sounds like a problem with: thread tension. Quite possibly to the point of having an entirely mis-threaded machine, whether because the thread was not routed correctly, or because parts of the thread path are missing.
(Let's review - just for a sec - the basics of how the stitch is formed. The needle, carrying the upper thread in its eye, penetrates the material. When below the material, the needle begins traveling back upward, creating a loop in the thread. (Depending upon the type of machine, either a hook or a shuttle) then pulls this loop so that the lower/ bobbin thread runs then through it. Then, as the needle retracts further upward, an arm (between the tensioning disc/spring and the needle thread path) pulls upward of the thread, tightening the stitch into place.

If, for example, there is no tension at the tensioning disc/spring, that arm will take from the thread spool instead of tightening the stitch into place.

Dec 14, 2014 | Singer Sewing Machines

1 Answer

Singer 6038 tension dial not working


there should be small washers ( discs with a tapered flange to direct the thread between the plates ) if they are not under the spring behind the tension adjuster knob then that will be your problem
if they are there then check that the tread is between the plates and not behind them
missing plates are available from a sewing machine mechanic sgop

May 07, 2017 | Singer 6038 Mechanical Sewing Machine

2 Answers

How do you thread a singer merritt 1872?


Wow, one of the few Singer machines that doesn't have a free download manual. Hmmm..... Ok looked up a photo of your machine. It's pretty easy.

1. raise your presser foot.
2. Put thread on spool pin.
3. draw thread over to and under from behind of the pre-tension disc at top
4. Draw thread down from the right and under the tension dial to seat the thread into the tension discs and flex that spring a little.
5. Through the take up lever.
6. Down through the thread guide.
7. Down through the needle bar thread guide.
8. Through the needle.

Hope that helps.

Aug 20, 2012 | Singer Sewing Machines

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...

1 Answer

Cannot get the tension right and the thread keeps braking


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 05, 2011 | Singer Inspiration 4206

1 Answer

My top stich thread loops and my bottom thread is straight but my tension feels equal on top and bottom


reset the top thread tension take-up spring - not the discs, the small, U shaped spring the thread goes through after the tension discs. Loosen the screw and turn the assembly down to add more tension to the spring.

Aug 12, 2009 | Consew 226R-1

1 Answer

Thread bunches up under fabric


Your thread tension needs adjustment.

Most likely it is the lower thread tension (not the upper thread tensioner).

When sewing very thin or very heavy material - it is required to adjust the lower tension as well.

To regulate the lower thread tension - turn the small screw on the tension spring of the bobbin case with a small screwdriver.

To increase tension - turn it clockwise SLIGHTLY.


Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Jun 30, 2009 | Singer 3116 Simple

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