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help with lower tension issues - toyota machine
kaod55
kaod55
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UNITED KINGDOM
Member since 8/25/13
Posts: 3
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Date: 8/25/13 8:46 AM

Hi,
I am new to the website and have just signed up but have been looking at reviews for a few weeks now.
I have an issue with my sewing machine and I am hoping someone can help.
It is a toyota quiltmaster.
When I am sewing the bottom thread is really loose and just sits on the fabric, the top thread then has very large loops around it. Whatever settings I try there is just lots of loops and mess on the back of the fabric. The top looks absolutley fine.
I have checked the manual, and it says this happens because the bottom tension is too low and I should move the tension dial to a higher number. However when I do that, the problem gets even worse. I have been through all the tension settings 0-9 and none of then fix the issue. If I sew on a 0 or 1 setting it is not as bad, but still not sewing a secure seam.
On other websites it suggests it is normal to sew in the middle of the range a 4 to a 5.
It has been like this on and off for about a month and sometimes I get it to a bereable setting, but it keeps happening.
Should I maybe look to get it serviced, I have had it for about 2 years and never serviced it, but I would say it doesn't get used a lot.
I have cleaned out the dust and fluff recently.
Any help appreciated!

LynnRowe
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LynnRowe  Friend of PR
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In reply to kaod55 <<


Date: 8/25/13 9:31 AM

When the bobbin thread is "flat-lining", lyng flat against the fabric, and the top thread is being pulled all the way through to the back of the fabric, your top thread tension is too low, or your bobbin tension is too high.

In your situation, the bobbin tension isn't too loose, it's too tight, at least as compard to the top thread tension, and is overpowering the top thread.

Could be caused by incorrect threading; unthread completely and rethread, ensuring the presser foot is fully raised during the threading. Otherwise the top thread may not seat properly within the tension discs.

The bobbin case screw could need to be adjusted slightly.

And that's about the extent of my knowledge...beyond that, I call for my tech.


Welcome to PR.

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PattiAnnJ
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PattiAnnJ
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Date: 8/25/13 1:23 PM

Thread the machine with the presser foot up.

Adjust the upper tension with the presser foot down.


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"Improvise, adapt and overcome." - Clint Eastwood/Heartbreak Ridge

Jennifer Hill
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Jennifer Hill
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Date: 8/25/13 1:35 PM

A mess of loops on the underside of your work almost always indicates insufficient top tension. Start by rethreading the machine entirely - as someone noted, if you have the presser foot UP when you do this, it is easy to ensure that the thread gets securely into the tension discs.

Jennifer in Calgary

SandiMacD
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SandiMacD  Friend of PR
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Date: 8/26/13 7:15 AM

Edited to add: Welcome to PR!

Have you switched thread types? Does that make any difference? Is your bobbin evenly wound? Does it happen when the bobbin gets low? Also you may want to use 2 colors of the EXACT same thread type and brand just to be sure you can tell the top thread from the bobbin thread.

And IF all other suggestions fail, it may be time to start playing with your bobbin tension. That can be really tedious and once started you are unlikely to ever get it back to where you started. You would put your top tension on 4-5 and then turn the bobbin set screw clockwise a bit and test each time. I am fairly certain you want to go clockwise which will tighten it but I am sure another PR member will correct me if I'm wrong.

If no improvement after a few bobbin tweaks you will need to take it in for service- with a sample.
-- Edited on 8/26/13 7:26 AM --

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path49
path49
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Date: 8/26/13 12:35 PM

Floss between your upper tension discs....there could be lint or a tiny piece of thread in there holding them apart. Loops on the underside mean your top tension is too loose....lint or thread in there would cause this.

kaod55
kaod55
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UNITED KINGDOM
Member since 8/25/13
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Date: 8/29/13 5:25 PM

Hi,

Thanks everyone for your advice. I will have a sit down over the weekend and try this all out.
I did try changing threads, and the problem was alot better when I was using gutterman threads compared to some cheaper thread I had. I usually use the same thread on the top and bottom.
I will try some of the adjustments and hopefully get these sorted.

bestgrammy
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bestgrammy
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In reply to kaod55 <<


Date: 8/29/13 10:09 PM

Hello kaod55. Glad you are here and hope a solution to this will soon be found.

Do you have your sm's manual? It's a good practice when re-threading to look up the threading instructions in the manual...anyone can have a glitch and misdirect the threading path or miss a thread guide...even we oldies (but goodies) do it more often than we admit. LOL "oldie" is not (necessarily) referring to age...just meaning sewing experience.

Check thread and needle for correct match to fabric type and # of layers. Make sure needle is not too large to use in your sm...check its manual...some machines can only use size up to a size 16...so can not use a size 18 needle.

Change the needle to a fresh one...the one in use may be slightly bent or the tip may be worn. Be sure to not use a Universal or Ball tip needle when the project actually needs a sharp point.

Look at the manual's instructions at the same time as re-threading. Same goes for re-threading the bobbin case...look at the manual while inserting the bobbin and threading the bobbin case. Make sure the bobbin thread is placed in its case going in the correct direction for it's bobbin system. For horizontal bobbin systems the bobbin thread should unwind counter clockwise...and for a vertical bobbin system the thread should unwind clockwise.

Check that the correct spool cap size is being used for the size of the thread spool if your sm has a horizontal thread delivery and that the thread spool and cap are against each other the way the manual instructs.

With either horizontal or vertical thread delivery make sure upper thread is not puddling or twisting around the base or underneath the thread spool...also make sure the thread isn't catching the spool's "notch" if it has one. If using a vertical spool pin...be sure to use a spool felt under the thread spool (that is more important than most of us realize). If the spool felt has gotten thin and worn...get a new one...in a pinch cut one out of felt or some thick fleece.

As others have mentioned...do upper thread with presser foot up...set tension with presser foot down (on fabric) start with setting at 4...sew a few inches...look under the fabric (use a double layer even for testing)...change setting to mid-way between 4 and 5..then sew a few more inches...check underneath again...if needed set tension to 6...sew again.

If still a problem...then IF your sm has presser foot pressure adjustment then look in your sm manual for what level to set it for the project fabric.

Be sure to only manually turn the handwheel toward you...not away from you...that can make the upper thread slip out of the thread uptake lever.

If I can remember anything more later on...I will edit this post.

-- Edited on 8/30/13 11:43 PM --

crankyoldlady
crankyoldlady
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Date: 8/30/13 3:30 PM

Are you using black thread? Black thread can create problems in many machines.

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