Question about White Sewing Speedylock 1600 Mechanical Sewing Machine

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White speedylock 7340 loose/missing stitches, up.looper unthreads

White speedylock 7340 loose/missing stitches, upper looper & lower looper unthreads. I've tried rethreading. I am not sure what the tensions should be set at after threading- I do not have a manual. SHould it be: LN: 4, RN: 4 UL: 2, LL:2?

Please help. I am going nuts over this!!

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All tensions should be on 4. Also, make sure the threading is done correctly. Or if you wish; You can contact me on other sergers for sale. "Best prices guaranteed"! rick_coccia@yahoo.com

Posted on Sep 16, 2010

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Posted on Jan 02, 2017

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1 Answer

I have a white speedy lock serger model 7340. I completely pulled all threads out and now trying to re-thread new thread. I have tried around 15 times. It will not loop. Threads don't interlock at all


Be sure that you are threading each thread in the correct order. The manual should have those instructions.

ALWAYS RAISE the presser foot when threading the machine!!!! For most machines, the upper looper is threaded first, the lower looper second (the lower looper thread finishes by draping OVER the top of the upper looper and then pulled toward the back of the machine), then thread the needles. Give each thread an extra little tug when threading the tension disk to make sure it is seated completely.

Even if you are unable to locate a tutorial for your particular machine, most models from the same era will thread the same.

Don't be surprised if it doesn't work the first, second, or even the third try. It took me most of a day to get mine threaded correctly the first time!!! Patience!

How to Thread the White Superlock 534 Serger Serger Machine Series Ep 2

How to thread White Superlock serger

Sewing Machine Instructions White Speedylock Differential 1800

You can search YouTube for other videos.

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Jan 06, 2017 | Sewing Machines

1 Answer

Juki 8300N


Dear Rosemarie,

Make sure you have threaded the machine from right to left, it sounds like the needle thread is trapped under the lower looper thread and cannot form a stitch.........start the threading over from scratch like this:

  1. Lower Looper
  2. Upper Looper
  3. Left Needle
  4. Right Needle
Is there a diagram for how to thread on the inside of the door ?

Follow that slowly and carefully to make sure you have not missed any thread guides on the way, as each one needs to be followed through to ensure correct tension and thread progression.

Cheerup and Be Happy always

Mar 27, 2008 | Juki DDL-8300

1 Answer

I have a white speed lock 234 serger and cannot get it to chain off. The thread bunches together


Yes, thread the upper looper first, the lower looper next.

***Make sure that you have the presser foot RAISED during the ENTIRE threading process until you get to the point of threading the needles.

The second to last step in the lower looper process is to make sure lower looper thread DRAPES over the top of the upper looper & thread, then both thread tails get pulled under the presser foot and toward the back of the machine.

Give each thread a little extra tug as it goes through the tension disk to make sure it is seated. Verify that all the threading steps have been followed. Any skipped steps, extra thread wraps, or incorrect threading will most likely cause a problem.

Make sure you have brand new needles before threading. If one is bent or damaged, you will probably have issues with skipped stitches.

Set all the tensions to the midway point (the factory standard for regular chain stitch). The tensions can then be tweaked when the machine is correctly creating a chain.

If the machine messes up, breaks a thread, comes unthreaded, etc., save yourself some time and frustration and RETHREAD everything from the beginning. Trying to rethread out of order usually fails!!!

Once you are more comfortable with your machine, you can try fishing a thread, but even experienced serger users still have trouble with this.

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Aug 03, 2016 | Sewing Machines

1 Answer

Instructions on changing thread tensions on a Mylock134


Probably the best thing would be to consult the owner's manual.

BEFORE you thread the serger, RAISE the presser foot so the threads will seat properly and the thread will slide easily. Be sure to thread each thread in the proper ORDER! (Usually upper looper is first, lower looper second and the thread tail should always end up laying OVER the top of the upper looper before passing under the presser foot.)

It is also helpful to use different colors of thread so it is easier to tell which thread's tension needs adjustment.

Sergers require varying tension settings depending on the type of stitch and the appearance you prefer. To achieve the standard stitch setting on most sergers, start out with all the thread tension settings at the midway mark between the high and low numbers. Then test and adjust from there.

Verify with the owner's manual that you are threading everything correctly and not missing any steps. If any thread happens to break or come unthreaded, it is usually best to unthread EVERYTHING and start over from the beginning. (Sergers are very finicky, so if you are frustrated trying to get things to work, the last thing you will usually try is unthreading and rethreading from the beginning.)

The Secret to taming your Serger

Adjusting the Thread Tension on Your Serger PREVIEW BurdaStyle


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Dec 06, 2015 | Sewing Machines

1 Answer

My serger is not looping at all. I changed the needles and nothing is working.


Start with the threading sequence. Upper looper, lower looper, left needle, right needle. Your upper & lower loopers must be threaded before your needles or it won't make the stitch. If it still doesn't work, it's out of time and will need to be taken in to a shop.

Mar 05, 2015 | Singer White Speedylock 1634

1 Answer

Can I disengage the upper looper on the White Speedylock 1634? If so, How? My manual says nothing about it. I want to do a hem on a sleeve that has two parallel top stitches and the lock-stitch underneath...


No. You would want to disengage your upper KNIFE not upper looper to do this but you need a serger with the COVER STITCH feature to do this. You can get the same effect using a twin needle on your sewing machine. Hope this helps!

Aug 22, 2010 | Singer White Speedylock 1634

1 Answer

White 1600 speedylock


when you get to the end of you stitching continue sewing for a few inches off the fabric (this will not hurt the serger) making a tail of just stitches and you will be able to clip the string and take your fabric off the serger- the threads should be wraped around the looper as you described. Let me know if this works for you

Jan 10, 2009 | White Sewing Speedylock 1600 Mechanical...

1 Answer

Just replaced my uppper looper on my white 1634....


Hi.
The upper looper goes just in front of the needles. I had issues with my machine when I got some fabric jammed and the looper moved so it wasn't catching the left needle and it was sewing a straight stitch on the left. The looper needs to be placed in front of the needles and very close to the needles without hitting them.

Hope this helps!
Cherie

Nov 01, 2008 | Singer White Speedylock 1634

1 Answer

Lower looper unthreads itself while sewing


Change the needle. I know this sounds wrong but it does fix this problem.

May 10, 2008 | White Sewing Speedylock 1600 Mechanical...

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