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Where do I tighten bobbin thread - SewShop.com Singer Model 1021 Instruction Manual

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Bill Boyd

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On the outside of the bobbin case where you pull the bobbin thread around and down a small; slot to under a small flat spring
that flat spring is the bobbin thread tension and is adjusted by the screw that holds that plate on
a very small amount of turn of that screw make a large difference to the tension
However if your problem is birdnesting under the material ( total mess) then the problem is not bobbin tension but the needle tension is too loose and not pulling up the bobbin thread properly

Posted on Jan 26, 2016

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Hi I have a Janome 419S or 423S, the problem seems to be my hook race unit keeps getting loose and then the thread jams up. What can be done? Please


A jammed machine is caused by thread being caught in thehook. Remove the upper thread and the bobbin case, turn the hand wheel towardsyou (counterclockwise) by hand and remove any thread in the bobbin case area. Alwaysturn the hand wheel towards you. Turning the hand wheel away from you(clockwise) can cause the machines timing to become unaligned and jam yourmachine. Also, always make sure the presser foot is in the down position beforeyou start sewing. Sewing with the presser foot in the up position will jam yourmachine in the bobbin case. If youhave an older model sewing machine with a shuttle hook, then you can alsofollow these: 1. Disconnect the sewing machine from any power source.Loosen the thumb screw on the left side of the sewing machine body and removethe cover to expose the needle bar. This is the shaft that extends down andthat you attach a needle to for sewing. Open the shuttle race and remove the bobbinand bobbin case. 2. Turn the hand wheel toward you until the needle hasreached the lowest point of the stroke. The hook should be at the top of itsstroke inside the shuttle race. Loosen the set screw for the needle bar on theupper part of the machine, this is located on the needle bar bushing (thecollar that the needle bar slides through when making a stitch). The needle barshould slide easily up and down. 3. Turning the wheel again, adjust the position of the tipof the needle so that the upper part of the needle eye is just below the bottomedge of the hook inside the shuttle race. Once in position, re-tighten the setscrew on the needle bar bushing. Do not allow the needle bar to slip whiledoing this. 4. Replace the bobbin and bobbin case and close the shuttlerace. Thread and plug in your machine. Using a sizable scrap of cloth, sew aseam to check to see if there are any skips in the stitching. If there arestill skips re-adjust the timing again until you can sew without any skipped stitches. 5. When proper timing has been achieved replaces the coveron the needle bar and tighten the thumb screw. Hope this will help you. Good Luck.

Sep 13, 2011 | Vacuums

1 Answer

I have an expression 2038 and the stitching has suddenly changed so that the top stitching is quite good but the underneath is loose. I have the tension on 4 and have a new straight needle and good quality...


If the bobbin thread is too loose, remove the bobbin spool AND carrier.Thread the thread through the tension clip on the holder in the normal way. Hold the thread and lift it. If the bobbin slides down, tighten the small screw 1/8 turn clockwise, until you can lift it with little or no sliding.

May 07, 2011 | Vacuums

1 Answer

I amhaving trouble with the thread brahing and I don;t know if it is the tension. Which way should the pobbing turn right or left and how do you set the tension For my Singer sewing machine


Check the upper threading and make sure it is threaded correctly. When you pull on the thread before it goes through the needle does it give a bit or does it break? If it is breaking when you pull then the tension is way too tight or it is threaded incorrectly. Make sure it isn't looped around some guide along the line too.

For the bobbin thread... when it is in the bobbin case outside of the machine dangle it by the thread. It should hang there until you flick your wrist a bit, which should cause some thread to release and drop the bobbin down towards the floor a bit. (If it just pulls out right to the floor it is too loose). Most bobbin tension is tightened by a small screw on the bobbin case near where the thread comes though. Breaking thread would not be from the bobbin thread being too loose. Too loose would cause looping on top side of the stitch not breakage.

Make sure the bobbin is in correctly. You should feel and hear a slight "click" when the bobbin goes in correctly.

Apr 26, 2011 | Singer Vacuums

1 Answer

Jc penny model 1710 sewing machine, the stitching isnt tight


You do not say if it is the top stitches or the bottom stitches for the bottom tension, check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out.
For the top stitch, tighten up on the tension adjustment on the front of the machine which looks something like this:-
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Apr 11, 2011 | Vacuums

1 Answer

The bobbin thread bunches up underneath the garment on Elna 2004 sp


Check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out.

Apr 08, 2011 | Vacuums

1 Answer

Thread and bobbin both threaded properly, but bobbin thread keeps knotting. sewing at top looks great but bobbin side is just knots!! I have a Euro-pro sewing machine.


Check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out.

Mar 16, 2011 | Vacuums

1 Answer

I have a Janome 8048. Here's my problem: As I sew I notice that the stitches on the top of the fabric look the way they should on the bottom side and when I take the material off the machine and flip it...


I haven't sewn in years. A sewing machine has a tension control on top and on the bobbin. If the intersection of the top and bottom threads is not in the middle of the sewn material, you have to adjust your tension.
In your case, what I think you are saying is that the stitch on top is just a straight line and on the back it disappears into the fabric.
To correct this, lower the top tension by loosening the tension adjuster on the thread where the thread loops around the small pulley.
Also, you could tighten the tension on the bobbin by slightly tightening the small screw on the side of the bobbin.
Gary

Feb 21, 2011 | Vacuums

1 Answer

The stiches are looping on the underside of fabric.I have tightened the top tension to its maximum.I have the correct sized needle, the machine has been oiled and it is threaded correctly. What else can I...


There is an adjustment on the bobbin holder - the little screw on the plate. Make sure that the bobbin is tightly wound and that it is correctly inserted, the thread must double back on itself coming out of the holder.

Feb 19, 2011 | Vacuums

1 Answer

My sewing machine is otherwise perfect..but the stitches hv a tiny dot from the thread in the bobbin case...wat to do??


Tighten the bottom thread or loosen the top thread a little. There should be a little screw on the bobbin holder where you can adjust bottom thread tension.

lp

Dec 29, 2010 | Vacuums

1 Answer

Stiches are loose in the bottom side of the cloth,if i change the bobbin case....will it help? I can understand that tension of thread is the problem.....but don't know what to do


the case the bobbin goes into has a little spring on its side .. the spring has one or two screws. one screw adjusts tension on the spring .. the bobbin thread goes under that spring when it is properly threaded .. if the screw is loose or missing then replace the screw or tighten it a little so that thread pulled thru the bobbin case spring has a bit of drag .. if its too loose then you can tighten the screw a bit more ... if you tighten it too much then it will pull the top thread thru to the bottom .. if your adjustment screw or spring is missing then you can replace the bobbin holder .. the new one should have the spring in place and be properly tightened .. . often the adjustment screw is just loose or the thread is not positioned correctly in the bobbin case slot. .

Jun 21, 2010 | Vacuums

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