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How do i set the tension on my toyota SL 3403 overlocker?

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Do you have a manual?
There is a manual available from the Aisin French site.,%20SL1T,%20SL1T-X,%20SL1A.pdf
It should indicate the tension settings for you to begin with.
Hope this helps!

Posted on Oct 13, 2010


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Set tension on speedylock model 7234

Unfortunately, because a serger uses different thread tensions to form the various stitches, there is no "set it and leave it" setting for everything. However, on most machines, the midpoint of each tension dial is the beginning point to create a regular overlock stitch. That is most often the factory setting, however, that may change over time and use requiring some tension tweaking by the user.

If you have trouble distinguishing one thread among them all, then try threading with four separate colors of thread. Then you can easily tell which thread/tension is out of wack. The ultimate tension is when the threads meet in the middle of the fabric.

One important tip: ALWAYS RAISE the presser foot when threading the machine and give each thread an extra little tug when threading the tension disk (this insures the thread is seated completely in the tension).

Second important tip: It helps to go through each stitch variation and write down in your owner's manual or a reference sheet what each thread tension setting works best for that stitch. Then you have a reference chart for the next time you need to adjust tensions and don't have to go through a laborious effort to recreate the stitch. The tension settings will change if your change thread weights, but at least you will a general beginning point to fine-tune your setting.

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This workbook may be helpful in creating each of the stitches on your overlocker:

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Try Googling (toyota)(SL3403)(manual) without parens.

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Tension settings on empisal overlocker 754d, pulse ?

The standard tension for a 3 or 4 thread overlock is to set each tension dial at the midway point and then tweak it from there. It helps to use different colors of thread so you can distinguish what each thread is doing.

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How do I get a balanced tension with my Elna 624 overlocker?

The best way is to thread with 4 separate colors of thread and then studying the stitch result. With the 4 colors, you can easily tell which thread tension is "off" and whether it should be tightened or loosened. However, a serger is not like a sewing machine where you can set the tension and use that setting for most projects. With a serger, a change in one or a couple of thread tensions will create a totally different stitch.

For most machines, there is a mark at the midway point on each tension control that is the "optimal" tension for a 4-thread overlock. HOWEVER, every machine differs, so these settings may need to be tweaked.

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You may want to download the serger workbooks at this site (Bernina), and work through each of the stitches. Make notes in the workbook as to how you have set up your machine to get the best of each stitch. This will be a great reference manual for many years.

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SL1T Toyota overlocking machine, with a differential knob, four thread, 2needles. Which thread tensions for sewing stretchy fabric together? Also I cannot get my needles aligned.

If you are unable to locate a manual for your machine, perhaps a manual for a different machine would be helpful. At least it describes the type of stitch and what tensions to set. (The middle tension setting on the Bernina 1150 is 4, so you can equivocate that with your machine's settings.)


Once you decide what stitch you want, you will need to practice on some scrap fabric (the same as your garment) and test how it looks and adjust from there. Depends also how much you want or do not want your fabric to stretch. Too much stretch will make a wavy seam.

There are also some workbooks available that you can work through each type of stitch.

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As for needle alignment, one needle always sets higher than the other. That is normal unless the needles are not catching the looper threads. Then the machine may have a timing issue. Take it for service.



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How can I set the right tension on an overlocker globe lock m-34?

The right tension on an overlocker will vary depending on the result that you want. The standard tension for just a plain 4-thread overlock stitch would generally have all the thread tensions set at the halfway mark between the high and lower number. From that point, you may need to tighten or loosen each thread tension to get all the threads to stitch evenly.

Probably the best advice would be consult your owner's manual. It should have instructions on adjusting the tensions and what to look for.

Another suggestion would be to search YouTube for a video that shows how to adjust overlocker tension.


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check to see if the needle is inserted correctly
make sure it's the right needle for the machine
try adjusting the tension setting to a higher number or letter
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