Question about Kenmore Drop-In Bobbin 505S-21BH Mechanical Sewing Machine

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How do you set the tension on a drop in bobbin?

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On bobbin holder there is a smaal screw tight or loosen to set tention. wcbotha@yahoo.com

Posted on May 12, 2010

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Posted on Jan 02, 2017

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I have a Necchi Omega 6147. How can I adjust the drop-in bobbin to use upholstery thread to sew heavy fabrics or leather?


You would need to adjust the tension screw so the tension is looser than usual. However, remember to mark the setting BEFORE making any adjustments so you will know where to return the original setting.

Bobbin Tension How and Why Tension is Adjusted

Understanding Bobbin Tension

Understanding Thread Tension Threads

...

Feb 10, 2017 | Necchi Sewing Machines

2 Answers

I have a pfaff 1475 and i can not get the tension correct. it is very loose on rt he bobbin side and perfect on the top side. HELP


......... when you did the bobbin drop, did it drop some then stop? Is the bobbin in the correct way (can go in two ways - thread feeds differently into / under the tension 'finger')

Jul 03, 2015 | PfaFF Sewing Machines

1 Answer

Needle is threaded correctly, but no thread is going into material. How do I fix this?


1. Make sure the needle is in facing the right direction and that it is a new needle.
2. Is the thread pulled from the bobbin?
3. Check the bobbin tension and start the top tension at four. Always thread the machine with the foot in the up position. This way you can feel for snags while threading. If there are any they must be eliminated.
4. Following the instructions that I have attached and you are likely to succeed.
HOW TO SET YOUR TENSION
Real Important: The objective is to even the top and bobbin tensions equally.
1. Remove bobbin case. Put bobbin in (rotating counterclockwise).
2. Put thread under the tension plate. Let the bobbin hang from finger and bob up and down lightly.
3. Adjust tension. The bobbin should extend one inch every time it is bobbed.
4. Put one drop of oil on race the bobbin case sets on top of. Replace the bobbin case and bobbin.
5. With the pressure foot up thread the top and give little tugs as you do this. There should be no snags or resistance. Make sure the thread goes in between the tension disc.
6. Now, put pressure foot down. Give a little tug to see if there is a resistance. Set the tension to four is a good start.
7. Try a piece of rag to sew. Set the tension on top to adjust for a perfect stitch.

May 01, 2015 | Sewing Machines

1 Answer

Machine is 30+ yrs old and the tensions settings are ALL screwed up so it won't sew even tight stiches...need help setting all (3) tension dials...please help me!


Real Important: The objective is to even the top and bobbin tensions equally.
1. Remove bobbin case. Put bobbin in (rotating counterclockwise).
2. Put thread under the tension plate. Let the bobbin hang from finger and bob up and down lightly.
3. Adjust tension. The bobbin should extend one inch every time it is bobbed.
4. Put one drop of oil on race the bobbin case sets on top of. Replace the bobbin case and bobbin.
5. With the pressure foot up thread the top and give little tugs as you do this. There should be no snags or resistance. Make sure the thread goes in between the tension disc.
6. Now, put pressure foot down. Give a little tug to see if there is a resistance. Set the tension to four is a good start.
7. Try a piece of rag to sew. Set the tension on top to adjust for a perfect stitch.

Mar 04, 2015 | Sewing Machines

1 Answer

I have a EURO -PRO model 9110. The bobbin tension is not correct.The top thread can be easily pulled out after sewing.How do I adjust the bobbin tension?


Hi janna

have you tried adjusting the top tension first?
if you have a drop in bobbin then it has to be adjusted at a sewing shop
the bobbin case you take out of the machine you can, using a small screw driver,,here's how
lower bobbin tension--
to test the bobbin tension,
remove the bobbin case & bobbin,,
hold it by suspending it by the thread,,
**** it once or twice,,
if the tension is correct, the thread will unwind by about an inch or two
if the tension is too tight, it does not unwind at all
if the tension is too loose, it will drop too much
to adjust turn small screw on the side of the bobbin
to the left is tighten
to the right is loosen

Sep 21, 2011 | Euro-Pro 9120 Computerized Sewing Machine

1 Answer

Bobbin tension is too tight. Need to find out how to loosen the tension on the bobbin.


if it's a bottom loader, use a tiny flathead jewelers screwdriver in the screw on the bobbin itself. turn it a 1/8th of a turn in either direction then hold the thread and bounce your bobbin. If the bobbin drops too fast, turn the screw the other way and repeat. Do this until your bobbin only drops about2-3 inches and stops. Tension should be set:)

Feb 20, 2011 | Kenmore Sewing Machines

1 Answer

The bottom thread is not feeding properly. It looks matted. Is the tension not set properly.


What quality of thread are you using? If it is old thread, poor quality thread, or the tension is not correct you will have difficulty.
Try this first: If you machine has a drop in bobbin, check your user manual for tension settings which usually don't need adjusted. If it is a pull out bobbin then try this: Pull 4" inches of thread out of the bobbin and drop it. If it stays there the tension is too tight and must be loosened. If it drops quickly the tension is too tight. If it drops about 1 inch and stops it is just right.
Also wadding can happen if you have a burr on your needle so change that out and see if it makes a difference.
Poor quality thread leads to more trouble than the saving you get. Try a quality Mettlers or Gutermann thread and that will really help.
Hope I helped.

Jan 21, 2011 | Singer Sewing Machines

1 Answer

Bobbin thread is pulling to the top, using embroidery needle, bobbin thread and proper thread on the top. As far as I know the machine is set right. This might not be the right place to ask, but am...


Setting bobbin case tension:
Put wound bobbin in bobbin case. Thread it in case. Hold the thread and carefully let go of the case only holding bobbin thread. The case should NOT move. Quickly let your hand drop 2-3 inches to let the bobbin case free fall for 2-3 inches, the bobbin case should move slightly then stop. It moves because it let’s a little thread off the bobbin. It should then stop .5"- 2" of thread should release. If so, your bobbin case tension is right. If it’s right then begin to look at your top thread tension. Always Always start with a properly adjusted bobbin case, then adjust your top tension accordingly.

Mar 18, 2009 | Bernina Artista 170

1 Answer

My zig zag stitch is distorted on the top side but looks perfect on the underside. I have tried adjusting the tensions and rethreaded the machine, etc.


The bobbin tension sounds too loose. This will help if you have a bobbin case and not a drop in bobbin. Let me know if you have a drop in bobbin:
Setting bobbin case tension:
Put wound bobbin in bobbin case. Thread it in case. Hold the thread and carefully let go of the case only holding bobbin thread. The case should NOT move. Quickly let your hand drop 2-3 inches to let the bobbin case free fall for 2-3 inches, the bobbin case should move slightly then stop. It moves because it let’s a little thread off the bobbin. It should then stop .5"- 2" of thread should release. If so, your bobbin case tension is right. If it’s right then begin to look at your top thread tension. Always Always start with a properly adjusted bobbin case, then adjust your top tension accordingly.

Mar 12, 2009 | Sewing Machines

2 Answers

Bobbin tension


This is an issue of your upper thread tension, so take a look at this generic tension solution

If you are in a pickle with your bobbin case, check top tension and bobbin case are free of lint, reset the top tension to 4, and adjust the bobbin tension to suit......some more detail on how to do that, is here

Bargain Box

Apr 20, 2007 | Kenmore Drop-In Bobbin 16231 Mechanical...

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