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How to thread bobbin for Singer Stitch and Sew model 646

Stitch -n- Sew Model 646

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: singer simple sewing machine will not sew

need needle threading instructions singer 3116 simple. pictures would help. thank you

Posted on Mar 15, 2009

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bargainbox
  • 1388 Answers

SOURCE: Kenmore Ultra Stitch 12 model 1595280. Tension

Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.

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 consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks

Bargain Box

Posted on Sep 06, 2009

  • 1 Answer

SOURCE: bobbin singer stylist zig zag model 477

Check this web page
http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Singer_Sewing_Machine_Threading/singer_477_threading_diagram.htm

Posted on Jan 23, 2010

  • 1116 Answers

SOURCE: I have a Singer Touch N Sew Model 636. The

I had a Golden Touch 'N Sew many years ago and as the machine aged and parts became worn, step 4 of this bobbin winding diagram started to become a problem and I had to sometimes try several times before the "tabs" would release. If they did not release, the machine "thought" it was still winding the bobbin and would not sew.

http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Singer_Sewing_Machine_Threading/singer_2001_touch_tronic_threading_diagram.htm

Posted on Mar 06, 2010

  • 1 Answer

SOURCE: how to thread the bobbin on a singer touch and sew model # 625

how to wind the bobbin of the singer touch and sew model 625



Posted on Jul 26, 2011

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Need model no to get manual


You seem to have a model 646, commissioned in October, 1968,
http://www.singerco.com/uploads/download/1269_646.pdf
The touch and sew models (aka Touch and Swear, Sew and Throw, etc.) are very touchy about bobbin quality and placement.

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The bobbin housing in singer model 9410 keeps moving out of position


After you put the bobbin case in, release it, and then pull on it to make sure it is in correctly.
The gathering is called a "bird's nest", and is caused by the machine not being threaded correctly.
Rethread the machine top and bobbin.
Then, sew a test stitch on a scrap of like material.

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is the needle inserted correctly--flat side goes to the back of the machine
the possiblities are
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I have a singer sewing machine Model #4622A. I cannot get the bobbin case to stay in the machine. It will sew a little, then the bobbin thread gets knotted up and the fabric gets caught in the foot feed....


Hello. Are you putting the presser foot down before sewing? Check also the stitch length, set it to at least 3, and make sure it's not set to a darning stitch or hand embroidery stitch that lowers the feed dog.

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My singer model 237 makes a stitch that doesn't look right. The bottom thread is just goes through the top thread loops under the material


Hi, if stitches are off, there is a problem with balance between the upper and lower stitch adjustments. You have to tweak these. Also, make sure there is no lint in the bobbin case area or under the feeddogs. Here is an excellent blog for 237 Fashion Mate owners. You are lucky to have one of these from the 1960's. http://blog.sew-classic.com/2010/02/02/singer-237-fashion-mate-sewing-machine-reveiw.aspx
Happy Sewing!

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Singer Futura II - Model 920 Sewing bottom thread is very loose, top thread perfect. Lost manuel in move. Dianne


This happens when we forget to have the presser foot raised when threading.

What looks like the fault of the bobbin is actually the top thread not forming a tight stitch with the bobbin thread.

When the machine is threaded with the foot down, the tension control is closed and the thread cannot enter the control as it should. When you begin to sew, the tension control cannot do it's job.

If the machine is already threaded, lift the presser foot and pull about 10" of thread from the needle, or re-thread the machine with the presser foot up.

Mar 14, 2010 | Singer Sewing Machines

1 Answer

How to thread the bobbin on a singer touch and sew model # 625


how to wind the bobbin of the singer touch and sew model 625



Jun 13, 2009 | Singer Sewing Machines

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