Question about Sewing Machines

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My bobbin thread sensor is not working and when the thread is low it sticks in the sensing position.

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  • 66 Answers

Posted on Mar 19, 2018

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6 Suggested Answers

6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: Not picking up the Bobbin thread

I cleaned the machine good with canned air, oiled it. I took out the bobbin case and cleaned it good also. I then noticed the tension screw on the bobbin case was loose, tightened it and the problem was fixed.

Posted on Nov 17, 2008

Rob Ristin

  • 97 Answers

SOURCE: Needle hits the bobbin holder and doesn't grab the bobbin thread

Also note that using a red band Singer needle will cause this exact symptom. The Singer needle is about 1.5 mm too long for use in any other machine. Ensure that you're using a standard needle. (Schmetz and Klasse are good examples.)

Your machine may also be out of time, which would require professional repair.

-R

Posted on Mar 11, 2009

louislevel_2

Louis Magpantay

  • 374 Answers

SOURCE: bobbin threading

hi! well! everything is gonna be fine,make sure the thread was wine on clockwise rotation as shown on figures if this similar to your bobbins anyway this is just a sample how to set up bobbinsf1d210b.jpgthe thread is inserted on slot of bobbins case to acquire a tension tread. then hold bobbins on spindle while the needle of machine is on higher position.as shown on figures2320d1b.jpgthen inset this on shuttle hook case as shown on figures.d60bb50.jpgthen after bobbins was set up on shuttle case the thread of bobbins will hook up by the thread of needle by rotating the handwheel manually by your hand be sure the top thread was set up properly.just let me know if the procedure can help.

Posted on Mar 25, 2009

Geoff

  • 562 Answers

SOURCE: bobbin not taking up the thread

Thread the needle and pull out 6" of thread, hold the end of the thread, leaving the foot up, cycle the needle down and back up, you should have a loop of thread appearing under the foot and over the needle thread.

Slide something between the foot and the plate,from left to right this should pull the bottom thread up.

Posted on May 09, 2009

Robbie Brewington

  • 255 Answers

SOURCE: Bobbin won't come up!!!!!

This is going to sound silly, but take out the needle and check that the flat side of the needle is facing the way the instruction books says it's supposed to. Unless the flat side of the needle is facing where it's supposed to for your machine (usually--but not always--to the rear, away from you), the upper thread will not make a loop.

(Cost me $85.00 to figure this one out.)


Happy sewing!

Robbie

Posted on Feb 01, 2010

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1 Answer

I sewed a support seam on neck line. got the bumpy stitches from bobbin. rewound bobbin, threaded machine. went to sew and now nothing works. it wont sew.


Not quite sure since the symptoms are not clear. "Bumpy stitches from bobbin"--does that mean there were thread nests on the bobbin side of the fabric? That is thread nesting or bird nesting resulting usually from mis-threading, upper thread not completely seated in tension disk, or upper tension too loose. Remove the upper thread from the machine. ALWAYS RAISE the presser foot and rethread from the beginning--verify the thread path is correct. Set the upper tension to the midway point between high & low number and retest the machine. (Upper tension may need to be tweaked because fabric, thread, and age of the machine will have an affect.)

Check that the bobbin is wound smoothly--no lumps, bumps, or thread ends/pieces sticking out of the bobbin. Check that the bobbin is installed in the bobbin case correctly (turning the proper direction) and the bobbin tension is threaded completely.

If the upper thread is not picking up the bobbin thread, make sure to install a brand new needle. (I don't try to straighten or "fix" damaged needles. With today's computerized machines, it may cause more damage than a new needle would cost. That may work on the old mechanical machines like the Singer Featherweights, but my machines are too important to risk for the price of a needle.) If it still won't pick up the bobbin thread, then the machine's timing has probably been knocked out of alignment. Search for sewing machine timing or take it for service.

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Jan 14, 2017 | Sewing Machines

1 Answer

Future quartet beeps when sewing,only allows 5 stitches then beeps what does this mean???


It could be a low bobbin sensor issue (either bobbin is too low, or sensor is out of alignment/has lint blocking it). Or it could be a check spring/upper thread sensor issue. You can check to see that when you are threading the upper thread; check that the thread is catching in the check spring(this will be a very small spring in the thread path--usually step 3--). You may have to remove the head cover to see. Try cleaning the bobbin area and rethreading the upper thread.

Jan 04, 2017 | Sewing Machines

1 Answer

Why doesn't the bobbin thread low message show (although setting on 2) and machine doesn't stop when no bobbin thread?


Um, why would the technician only do half the job???

Could be that the bobbin sensor is dirty. Most likely covered with lint or loose thread.

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Oct 13, 2016 | Janome 11000 Memory Craft Special Edition...

1 Answer

My machine keeps showing the bobbin error but there is nothing wrong in the bobbin


Assuming you have threaded the bobbin case correctly, you might try using a different bobbin. There may be something wrong with it. Make sure that there is no thread sticking out of the side of the bobbin.

If there is a bobbin thread sensor, it could be dirty causing it to not read the bobbin correctly.

When you thread the upper thread, be sure to ALWAYS RAISE the presser foot so the tension disk is released and the thread can seat properly.

Oct 11, 2016 | Bernina Artista 640E Sewing, Quilting and...

2 Answers

The bottom thread is real loopy. I have adjusted the top tension and it helps a bit but still to loose


Remove all the thread from your machine. Install a brand new needle. Raise the presser foot and re-thread the upper thread, making sure you are following the correct threading sequence. Confirm that the bobbin thread is threaded through the bobbincase properly. Now, perform another test stitch. Is the bobbin thread still looping?

If you have already tightened the upper thread tension and the bobbin tension is still too loose, then you may need to tighten the bobbin tension. First, mark with a permanent marker where the slash of the screw head meets the bobbin case. This will mark where the screw was originally set before you begin making adjustments and allows you to return the screw to that position should you need to.

Set the upper tension to the halfway point between the high & low number. This is what would normally be the standard.

Then gently turn the bobbin tension screw to the right 1/8th of a turn at a time. Then test. Keep adjusting until the bobbin thread tension is correct. The tensions are correct when the upper thread and the bobbin thread meet in the middle of the fabric.

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Nov 15, 2015 | Sewing Machines

1 Answer

How do you fix a thread on a sensor. My machine has been in the shop and has the same problem after using is for 45 minutes. It just makes the computer noise and will not sew.


It sounds like you are getting a message that the thread is broke. There are often two sensors for tread problems. The upper thread sensor is usually on the check spring. When the check spring fails to move up and down the sensor indicates the upper thread is broken. This can be confused with lint. It is difficult to see the check spring without taking apart the machine. It is above the needle clamp and below the take up lever where the thread goes from down to up.

In the bobbin area are optical senders and receivers that sense low bobbin thread, These are confused when their is lint blocking the sensors. This can be cleaned with a small brush. Rotate the hook and clean in the hole that the sensors are shining through. That said you can also have bad sensors or loose wires or a computer chip problem that will give you error messages. The most challenging ones are those that work some of the time. When you take it in and it works they service person thinks the problem was solved with cleaning. Take it back if cleaning does not help.

Mar 22, 2015 | PfaFF Sewing Machines

1 Answer

Upper thread looping around bobbin


make sure your needle is positioned correctly? not too high and not too low.

Jan 10, 2014 | Brother Sewing Machines

4 Answers

Can you tell me what the bobbin image on the artista 640 means? It will only sew for a few stitches and then stop


Hi, most likely your bobbin sensor is being blocked by something. Common causes are a dirty sensor. Q-tip on the eye of the sensor inside the bobbin door. Or there is fuzz blocking it. Next take out the bobbincase and the bobbin. Look in the bobbincase and you will see a round spring. This spring acts like a brake for the bobbin. Sometimes these springs will get moved and out of position blocking the little space that the bobbin sensor reads through. Reposition the spring so you can see through it and the bobbincase.
That should do it.
Good luck.
Rick Engel
Bernina tech

Mar 02, 2010 | Bernina Artista 180

1 Answer

Husqvarna viking 770 bobbin sticks on rewind post


I believe that you mean the bobbin is stuck on the winder. If so, take the thread off of it and it will come off easily.
Wind your bobbin at about 1/2 speed until it gets 1/4 to 1/2 full, then you can speed up. Also, make sure that the presser foot is up if winding with thread through the needle. Always make sure that thread feeds smoothly to the bobbin.
The bobbins stick when you have too much tension on the thread or wind too quickly. They will actually squeeze down on the bobbin winder post. Removing thread generally solves the problem.

Jul 06, 2009 | Husqvarna Viking 1

1 Answer

Threading lower bobbin


There are some different bobbin cases for different machines but the one you have is a pretty common one with a finger sticking out on top. If you examine the bobbin case you will see a slot on the side of it and there is another piece of metal screwed onto it. This is the tension they are describing.
To thread it properly, turn the bobbincase upside down and insert the bobbin in the case so you can see it. Place your thumb on top of the bobbin and pull the thread through the slot on the side of the case and under the piece of metal(the lower tension) which I described to you earlier.. When you have done that, remove your thumb from the bobbin and pull on the thread. It should have some tension on it.
Next,placing a thumb or finger on the bobbin to keep it from falling out, turn the bobbin case over.
Keeping the finger sticking up lift the lever on the
front of the case and insert the bobbin and bobbin case onto the spindle inside the hook assembly(The part that is in the bottom of the machine that turns when the hand wheel is turned.) Don't worry about the thread that is sticking out.
Holding the upper thread under the presser foot ,turn the handwheel towards you until the top thread pulls the lower thread to the top. Pull the thread to the left of the machine, insert your fabric, lower the presser foot and begin sewing
One more thing , The finger sticking up on the bobbin case will go into a slot on the ring holding the hook inside the machine.
Hope this solves your problem.
Be sure you thread the upper part properly. It should go through the tension, then the take up lever and then the needle. Tension should be set at around 5
sewman7

Jan 17, 2009 | Brother LS-2125 Mechanical Sewing Machine

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