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I don't know what screw to turn on the bobbin case

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  • Sewing Machines Master
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Please provide the make & model of your machine. We can't guess what the bobbin case looks like.

Understanding Thread Tension Threads

Bobbin Tension How and Why Tension is Adjusted

Understanding Thread Tension Threads

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Posted on Dec 29, 2016

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Spoolcase assembly


Do I understand right, you unscrewed two screws on the bobbin case holder and lifted it out? Underneath is a black plastic ring (inner guard ring) which sits inside the lower guard metal outer. I guess you undid the bobbincase to clear under it, I have seen machines with a lump of lint under turned into felt from being left so long. While its out, clean the underside and under the inner guard ring with your little brush, chech the bobbin case holder side too, there is a little groove on the side and sometimes tiny bits of thread will be caught in it. The trick is to turn the flywheel until the lower guard cutout open bit is facing 6 on a clock dial, ie closest to you. Now look at the inner guard ring, it has a flat edge cut off, turn it so the cut out faces about 7 on the clock and centred in the outer guard. Now you need to insert the bobbin case, it has a piece with two "beaks" on it, this is the front and these beaks need to sit between two metal parts in front of the outer ring which holds the bobbin case firmly. Put the front part in place and the whole case will fit in perfectly, just give it a little wiggle if it doesnt quite line up. Tighten the two shinny silver screws to fasten in place. There is a little black screw too but dont touch this, its a fine tension adjustment. Hope this assists you, if not post again andI will try to find a photo of the assembly.

May 20, 2013 | Elna Heirloom Edition 6005

1 Answer

How to adjust tha tension on the bobbin on kenmore model 158.13180


Hello Sharon, Remove the bobbin case from your machine. On the side of the bobbin case you will find a single slotted screw. If you want more bobbin tension, turn that screw to the right. ( clockwise ) If you want less bobbin tension, turn that screw to the left. ( counter clockwise ) When you change the bobbin tension, you may also need to adjust your needle tension to match.

Mar 25, 2013 | Kenmore Sewing Machines

1 Answer

Bobbin tension is too loose


Ok, go a head and set your top tension to "normal" Then take out your bobbin case and get our your tiny screw driver. Find the small screw that holds the tension spring on the case..

First carefully examine the spring (look for lint jammed under it, etc.) Then turn the screw clock wise a little bit..(perhaps a quarter turn) reset your bobbin and put back in the machine. Sew a test strip. If your stitch is better, tweek the bobbin screw a bit more. Use caution though you don't want to reef down too much and break the screw.

Aug 02, 2012 | Singer 7256 Sewing Machine

1 Answer

Singer 7430 bobbin case clicking sound


it's possible that the bobbin case did not get inserted correctly
or it's also possible that the bobbin case needs to be replaced, I've had to replace the bobbin case on one machine.

May 30, 2012 | Singer 7430 Sewing Machine

1 Answer

Kenmore 385. 15343600


Remove bobbin, presser foot, needle. Tip machine back on towel gently. Unscrew plate--don't lose screws! Do not service in presence of children and curious pets. Put foot pedal next to you on tabletop. Use Zoom Sewing Machine oil. Any part MOVING that are NOT gears get one drop oil. Any DRY ONLY gears get dab of Singer sewing machine lubricant. Replace screws. Secure screws. Open left front compartment & one drop oil @ top of needle bar. Open race shuttle (where bobbin case fits in). One-half drop oil of on oscillating hook (bottom left - hand corner...smear that oil around! Insert NEW needle all way UP in needle bar groove, flat needle shank toward back. Turn handwheel towards you and raise. Raise presser foot so that threading locates all tension slots a's you pull thread TAUT from spool to each tension slot and left to right through silver, metal take-up lever, and down to tension bracket, pass needle, then pull 6" thread towards you and thread from FRONT to BACK of needle. Place bobbin into case and "thread" it. Set presser foot on DOWN position. Turn handwh towards you, dipping needle into needle plate. Make loop with bobbin thread, pull towards you. Place a good 7" underneath presser foot (both threads). Let machine RUN on 24" scrap to distrubute oil/lube. That's it! Jimmy

Apr 05, 2012 | Sewing Machines

1 Answer

I have a VX1250. I don't know how to regulate the tension.


There is two places to adjust thread tension: the top tension device controls the top thread tension and is usually a dial or knob with numbers on the front of the machine.

Then there is some form of tension device on the bobbin; in your case I believe the Brother has a removable bobbin case with a tension spring which holds the bobbin thread firmly: the tension spring can be adjusted with a screwdriver but once set, you shouldn't need to adjust this much, just alter the top tension slightly for different weights of fabric. So start by setting top tension dial to 4-5 and test stitch a seam. Use different coloured but the same type of thread top and bottom and take a look at the seam. You want to see a balanced even seam.

Here is a link to a great info site for this:
http://www.sewusa.com/Sewing_Machine_Repair/Thread_Tension_Settings.htm

If the bobbin thread is too loose, then you probably will need to finess the tension spring on the bobbin case and adjust this slightly. The best way to set the tension on the bobbin case is as follows. Load the bobbin into the bobbin case and pull the thread tail into the tension spring, then suspend the bobbin by holding the thread tail up in the air (the dangle test). You want it to be just tight enough to hold its own weight, but still able to release thread when you pull gently downwards on the bobbin case. If it isn't doing this then take your little screw driver and adjust the screw on the leaf tension spring by ONE QUARTER TURN ONLY. Lefty looser, Righter Tighter. Then test again, and adjust again until its right.

Now test stitch again and finess your top tension to get the seam even. Remember to change the needle for each new sewing project too; this will impact tension also.

Jan 04, 2012 | Brother Sewing Machines

1 Answer

I have a Janome model 577 (I know it's old!!) and


If the top tension is on 0 I suspect the problem begins in the bobbin, make sure first of all the bobbin is turning anti clockwise in the bobbin case, when you pull the thread through the bobbin case there should be slight resistence, if it is too loose turn the screw on the bobbin case clockwise about a quarter of a turn to tighten, if it is not making muh difference you may have fluff stuck under the spring on the bobbin casem take a fine sewing needle and slide it under the spring to see if you can get any fluff out, top tension about 4 or 5

Aug 23, 2011 | Janome Sewing Machines

3 Answers

I need to know how to adjust the bobbin tension on my euro-prox sewing machine.


There is a tiny screw on the side of the bobbin case.

Mark the **** (in the screw head) position on the bobbin case with tiny dab of nail polish so you will know where the original setting was.

Left/loose and right/tight.

If you are adjusting because the bottom stitching is loose/loopy, first try threading the machine with the presser foot up to see if this solves the problem.

May 01, 2010 | Euro-Pro Shark 60 - 384

5 Answers

Bobbin case is moving out of place


I was having the same problem with my machine and finally the spring broke. I couldn't find any parts for this so my husband made me a new spring out of a coke can! LOL!! Anyway, he messed with it for a while and it kept doing it. He figured out that it was not the spring but the other piece under the spring was not pushed up far enough to keep the bobbin case in place so he took a screw driver and pushed it forward toward the bobbin case and now my bobbin case does not move!! And the machine is sewing perfect! At least for now. Anyway, it's not the spring or the thread adjusting screw!

Jun 06, 2008 | Brother CS6000i Computerized Sewing...

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