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Bobbin tension assembly

I have a great old sewing machine but recently had to clean the shuttle assembly and in order to remove it, I had to remove the 2 screws and I was not supposed to remove. I put it all back together but the bobbin tension to isn't working properly. I think the locking wings may not be installed correctly but not sure. Can you give me directions on how to fix this. I know mine is an old machine but I am happy with it.

Thank you, Dorrell

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SOURCE: Bobbin thread breaks

Things to check for thread breakage (top or bottom)

1. Good thread in the machine - not hand thread, cheap thread, quilting thread.
2. A burr on the hook - a small nick on the hook can grab and tear threads, however this usually causes the top thread to tear, not the bottom
3. Make sure a new needle is in the machine - one made for the material you are sewing
4. The bobbin must be installed to rotate in the correct direction in your bobbin case
5. And I'll say it anyway - tensions - the primary cause of thread breaking - Remember, there are TWO tensions in a sewing machine, top and bottom. Also, the thread you see on the bottom of the stitch is the top thread, and vice-versa.

Posted on Dec 04, 2007

  • 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.

Posted on Mar 29, 2008

  • 399 Answers

SOURCE: I have a Brother SE-270D

its the problem of the timing belt in your machine its extra loosen or extra tightned or is slightly came out of its position or finally broken.
as the machine is proper just missing the proper speed as it should be .
it is running continuosly as you stated.
check the timing belt and make it proper if its worn out and needs replacement this is how its done

There is an adjusting screw on the right side of the machine head. Follow the motor bracket to the machine head and loosen that big old screw or bolt which will raise or lower the motor giving you slack to remove or replace the belt.

feel free for further queries

Posted on Sep 19, 2008

  • 87 Answers

SOURCE: Bobbin tension on Viking 350 Sewing Machine

Viking bobbin case tension adjustment:
When the bobbin runs out, sometimes it bends the bobbin case tension spring. Then tension is too light. Take the bobbin case out of the machine. Tie the loose bobbin thread to the Designer 1 needle plate. Insert the bobbin in the bobbin case. Here’s the tricky part set the bobbin case on the table as if it’s in the machine (Bobbin is visible and sitting horizontal to table top) threaded as if sewing and loose end tied to needle plate (that is removed from the machine). Lift the bobbin case off the table rotate it so that the flat side of the bobbin are vertical to the table and no longer horizontal. Have the bobbin case oriented so that the thread coming out of the bobbin case sprint (slot area where it is put for sewing) is at the top. Lift it high enough that the needle plate is lifted from the table. It should not release thread unless you shake it gently and then a very small amount of thread. The needle plate is the exact weight resistance your bobbin case should have on the thread.

Posted on Mar 19, 2009

  • 208 Answers

SOURCE: Singer Featherweight tension assembly

Putting this back together is a thirty second job if you have done it a hundred times. If you have never done it but have mechanical aptitude, it may be a challenge.

Whatever you do, don't bend the check spring out of shape!

Below is a link to the Singer site with the schematic for reassembly. When placing the check spring back in place, place it in about the 6 o'clock position with no tension so that it has a fair amount of check before pulling it up in place..

When setting the tension, at a setting of "1" the tension disks should just be slightly compressing the beehive spring. "0" is almost no tension at all. Normal sewing is 5.

Get all of the parts together and push in the cup with the numbers while screwing on the knurled nut taking care to get the pin in one of the holes.

Posted on Jun 19, 2009

  • 3 Answers

SOURCE: Pinnock

I also have a pinnock sewmaster, here is a link to the instruction manual, hope this helps

Posted on Aug 31, 2009

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Bobbin shuttle fell out

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    Learn how to insert a front loading bobbin case. It's easier than you might imagine. Janome ... Janome HD-1000, Beginnersewing machine.

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    Nov 7, 2014 - Well, I've been teaching on Janome machines for about 6 years, and I ...Take the Trouble Out of Sewing Machine Troubleshooting! ... has fallen out of the take-up lever, which can happen if the machine was jammed along the way. ... of thread through the bobbin winding tension at the top of the machine.

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Feb 09, 2016 | Janome Hd1000 Sewing Machine

1 Answer

How to tighten a loose bobbin case on an Elna 21C sewing machine?

The only thing to really tighten on a bobbin case is the tension screw. (Unless, what is really loose is the mechanism--hook, shuttle--that the bobbin case fits into.) It will probably be worthwhile to just bite the bullet and buy a new bobbin case for the machine. They aren't that expensive and it certainly will relieve a lot of potential future frustration.


Jan 06, 2016 | Elna Sewing Machines

1 Answer

How to put string into the shuttle

I take it you have a shuttle with a bobbin inside. Remove bobbin and attach it to the bobbin winder by the balance wheel, wind bobbin and while holding shuttle point downwards drop the into the shuttle, pull thread down to the bottom of side slot and then straight up under tension spring, load shuttle back into machine pointed towards you tension screw up

Feb 12, 2014 | Sewing Machines

1 Answer

Bobbin shuttle

1. Clean shuttle with your sewing machine brush to remove old broken threads, lint, and sweep out the feed dogs carefully. 2. Rethread making sure you have the handwheel turned toward you, all the way up. 3. Lift presser foot up BEFORE you put thread front to back in eye needle. 4. Set machine on straight stitch sewing. Attach straight stitch foot if necessary. 5. Make sure 5-6 inches of thread are pulled toward you from threaded needle. 6. Pull up bobbin thread. 7. Pull 5-6 inches of bobbin thread and put it, along with needle thread under presser foot. 8. Put fabric scrap under presser presser foot and LOWER it now. Make sure, too, that the needle is correct size for fabric you're sewing. 9. Do a test. You may need to set tension at 4, stitch length at about 4 and width at 6. Just test it and adjust tension in very, very short turns. Another tip: Put one drop of good quality sewing machine oil on the hook, lower left-hand side. Make sure when you thread bobbin in the bobbin case to hold bobbin between thumb and forefinger and pull out about 4 inches of thread after you make sure thread unwinds top left (if you are right-handed!). Guide the thread into the slot in edge of bobbin case (screw sits on top of this "edge". Pull thread under tension spring and then into the delivery eye. Never panic, my friend! Try this and see if this helps. You should probably insert new needle too--just in case "old" one bent. Jimmy

Mar 31, 2012 | Brother LS-2125 Mechanical Sewing Machine

2 Answers

I am sewing scout badges on a uniform and when I sew there is a bunch of needle thread bunched up on the bottom (the top looks fine). And the needle thread gets all caught up around the bobbin.

Clean out the bobbin area if there are any thread tangles there.

Refer to the maintenance section of the manual - see the configuration of the bobbin case and shuttle race? The bobbin case as an extending arm and the race a notch. When inserting the bobbin case into the shuttle, turn the handwheel so the needle is at it's highest position. Then lift the lever on the back of the bobbin case and insert the cast into the shuttle, arm pointing straight up toward the bed of the sewing machine.

Now thread the machine with the presser foot up - always - and see if the tangling stops.

When you forget to lift the presser foot before threading the machine, the tension control does not open to capture the thread. Then when you begin to sew, the top thread has no tension, and the bobbin thread, which does have tension, pulls the top thread to the bottom in messy loops.

Jun 25, 2011 | Kenmore Sewing Machines

2 Answers

Model 7467. bought in april and it was working. now top and bottom threads will not form "stich". it is threaded correctly! took off face plate - nothing jamming up. machine made a clunking noise...

try changing the needle
check the top thread tension
check to make sure the bobbin is inserted in the bobbin case correctly
check to make sure the bobbin case is correctly inserted into machine

Sep 30, 2010 | Singer Confidence 7467 Mechanical Sewing...

1 Answer

The machine keeps locking up. i have cleaned the bobbin and hook area. there was not much lint

if your machine has a front loading bobbin case, remove it and then remove the shuttle which the bobbin case fits into. most often there is thread or lint caught in the shuttle race preventing the shuttle from turning (it only needs a tiny piece of thread).

if you have done this check any gear meshing to ensure no lint or thread has been caught in the teeth of the gears.

if the machine sews ok and locks up after a few stitches then it sounds like needle threading or tension causing the problem. re-thread the machine and ensure there is sufficient needle thread tension to bend the needle a little when presser foot is down and thread is pulled through needle.



Jul 28, 2009 | Kenmore Sewing Machines

1 Answer

Bobbin and shuttle case pop out of machine .

You might need to clean the shuttle assembly.

1. Raise the needle bar to its highest position and remove the bobbin case.

2. Push levers sideways of the shuttle assembly and liftshuttle and shuttle race cove out by the center pin.

3. Clean the shuttle race of any lint or small particles of thread with a small brush.

4. Put a drop of oil on the center pin of the shuttle and on the shuttle race.

to reassemble, hold sjuttle by center pin and it carefull into assembly opposit the shuttle driver. Slip shuttle race cover into place. Snap the levers into position.

Occasionally remove the needle plate and clean feed dog with soft brush.

I hope that helps!

Apr 23, 2009 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Shuttle alignment and assembly

The shuttle/race/bobbin system shouldn't really be taken apart by the average user. Unfortunately, your chances of ever getting it back together properly so the machine will sew (this is the timing of the machine) are very slim. You'll need to take it to a sewing machine technician. I would recommend an authorized Pfaff tech as they'll be sure to have the proper tools to do this correctly - won't be inexpensive but will be worth it. Most "neighborhood sewing machine repair folks" don't have experience on computer machines. Resetting timing on a computer machine isn't the same as the old mechanicals and requires some expertise.

May 02, 2008 | PfaFF Creative 7570

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