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How do i adjust the bobbin case

Needle is hitting bobbin housing on the downward stroke

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  • 11 Answers

Can you give more info? Brand and model of your machine. What were you sewing when the problem started? Also, if you could post pics of the bobbin holder area of your machine, it might help.

Posted on Dec 16, 2014

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Posted on Jan 02, 2017

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  • 192 Answers

SOURCE: Needle & Bobbin out of sync

This description sounds like the machine is out of time. The needle should match up with a cut out section in the bottom of the bobbin area. If it is hitting, the timing has slipped, probably from sewing on a fabric that was too heavy for the machine.

Posted on Nov 14, 2007

bargainbox
  • 1388 Answers

SOURCE: singer 7426 timing off

Check the timing of the needle to the hook.
Here is a guide to generic principles of Timing

Posted on Aug 27, 2009

Testimonial: "very helpful...thank you"

  • 20 Answers

SOURCE: needle hitting bobbin case model 750

This is a timing problem the hook timing needs adjustment, and possible the needle timing also

Posted on Oct 13, 2009

  • 36 Answers

SOURCE: needle hits bobbin case...

If the needle hits the bobbin case the are only 2 things that could be wrong. Lets hope its the easy one, there are more than one length of needles, if the needle is to long or it is not all the way up in the neelde bar, the needle will hit the inside of the bobbin case. Now if that is not the problem then the machine is out of time. ALWAYS check the easy stuff FIRST.

Posted on May 23, 2010

Obertelli
  • 3006 Answers

SOURCE: The thread is bunching up

Your problem stems from the faulty foot lever mechanism. It's coupled to the upper thread tension control which only provides tension when the presser foot is in the locked down position.

If the presser foot won't positively engage in the down position, there's no upper thread tension and the thread bunches up below. Everything else stems from there. If the needle has hit the bobbin case too frequently then the bobbin timing may also be slightly out and the needle itself will be damaged and won't pass straight through the fabric; it only takes a tiny deflection from the vertical as it passes through the workpiece for the needle to flex and hit the bobbin case.

In summary, your machine is in desperate need of repair and adjustment. You haven't stated which exact Singer model you have, but they are usually easy to get servicing manuals for or you can take the machine to a sewing machine servicing specialist. Most singer spare parts (even for 100 year old machines) are usually still available fairly cheaply from a variety of sources, just enter "Singer spares" into your search engine to find suppliers.

To prevent re-occurrence, clean the mechanism regularly and lubricate it as directed by the manufacturer using sewing machine oil. Depending on how often you use the machine, do (or have done) a more thorough service periodically to check the timing and also that all mechanism screws remain tightly fastened.

I hope that my reply has shed some light on your problem and enables you to decide what to do next. Please take a moment to rate my answer.

Posted on Sep 30, 2010

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Um, it most likely is not a problem with the needle bar height but instead an issue with machine timing, ie the needle is arriving at the bobbin at the wrong time. This happens frequently when the needle hits a pin or a dense piece of fabric, deflects the needle, which hits the bobbin mechanism, and the bobbin is out of time. BE SURE you're using a brand new needle--you may even try a couple of new needles because sometimes they are defective out of the package. If the needle is defective (bent, has a burr, etc.) it could also be the problem.

You can search the internet for articles and videos discussing sewing machine timing or take it for service.

...

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Open up the bobbin case and remove the bobbin and case. There may be something catching on the hook (random thread) that is preventing the motion. The bobbin case could be off-kilter as well. If that is not it, take the cover off the sewing head and see what is blocking the mechanical parts of the levers.

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Needle is either bent, not fully into the needle housing or your timing is out.

So change the needle and make sure it is fully up into the housing before tightening the thumb screw. Now gently turn machine through a stitch sequence manually.

If you can hear it any noise from the needle at the bottom of its movement touching the bobbin casing, then the timing is out and needs adjustment. I've always left this to the technician so suggest you take it to your local Bernina service centre.

If you don't know where one is you can locate via their website. http://www.bernina.com/country_search-n111-sEN.html , then search your country and go to the local website. The Contact Us page should give you address telephone number and email details.

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Sounds like your machine is off timing, When the machine is properly timed, you should see the hook passing behind the eye of the needle when the needle is on it's upward stroke. If this is not correct the machine will not pick up the bobbin thread. You may have to take it in for adjusting, unless your a bit machnical.

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If this is a drop-in/horizontal bobbin, raise the needle to it's highest position. Remove the bobbin case then replace it so it fits snugly into the shuttle. Hand walk to see if the case moves freely in a circle. If it stops, it is not positioned correctly. You do not have to have a needle in to test this.

Once you are sure the bobbin case is correctly in place, re-install the needle. Hand Walk to make sure the case turns without any interference.

If the needle continues to hit, then the machine needs to go into the shop for service.

There is a DIY for adjusting the timing of the hook sewusa.com if you wish to try the adjustment on your own.

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This is a timing problem the hook timing needs adjustment, and possible the needle timing also

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Your timing is off. There should be a ruber belt behind your hand wheel, if you take off the case around it; you should be able to adjust your timing of the bobbin casing.

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This description sounds like the machine is out of time. The needle should match up with a cut out section in the bottom of the bobbin area. If it is hitting, the timing has slipped, probably from sewing on a fabric that was too heavy for the machine.

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