The threads are no longer looping

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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Try putting in a new set of needles. Make sure to fully insert the needles into the machine. If the needles are not set fully into the shaft, or if there is a burr or nick on the needle tip skipping stitches can result. If this doesn't solve your problem, possibly the timing is off and needs to be serviced.

rethread the machine to make sure it's threaded correctly & that the thread is not caught anywhere

put new needles

check the thread tension, it sounds like it's to tight

use a can of computer air & clean out around the loopers area for lint or loose threads

if none of these suggestions work, then having it serviced would be the next suggestion

Hello

You would pull out several long lengths of matching thread from my spool of thread and knot the threads together at one end (to hold them together). Grab the knotted end of threads with your left hand and place the threads(held taunt together) under the presserfoot of your sewing machine.

Select a narrow zigzag stitch that will zigzag over the threads, and holding both the knotted end(Left hand) and the other ends with right hand( holding tauntly), zigzag down the length of the threads.

You can use this for matching button loops, cording for belt loops, or whenever you need matching cord. The thickness of the cord will depend on how many strands of thread you want to use. You insert the loop of cord into the seam, so that when the garment is turned RIGHT SIDE OUT, the loop will be sticking out of the seam and you can put the button through the loop.

THANK YOU FOR VISITING FIXYA

I think that you must have some of your fabric and lint in your machine. Take a brush ( I use a new paint brush and clean your machine looper areas really well, oil then Totally rethread, take your thread for each guide and treat it like floss going into all of the grooves so that they are seated properly. This should do it, getting your thread seated is the most common problem with overlockers not chaining.

Is there a thread guide printed inside the machine? have you asked your friends? When you've exhausted every avenue, take it to a dealer and ask them to show you how.

Your machine isn't threaded properly. Check to make sure #1, you have it threaded right and #2 the thread on all 4 spools is in between the tension dials. Good Luck and Hope this helps.

Make sure all of your threads are in between the tension dials. Sounds that the machine isn't catching because of the tension. Good Luck

yes, take all threads out, and re=thread according to the diagram, following the threading order.

When you thread the serger, your suppose to start threading the 3rd spool (left to right) first, then the 4th spool, then thread the 2nd spool which ends up in the second needle (left to right), There is a lever or bottom looper that the thread must go through before placing thread through the 2nd needle. Finally, the last spool to thread is the 1st spool (left to right). Follow the threading pattern and once you put the thread through the two loops that look like springs, turn the wheel at the right toward you until you can see like a lever with a ****, thread that **** from the back then put the thread through the machine to the right. Turn the knob to toward you again until the upper looper is showing, then you have the put your thread through the hole in that looper then through the first needle. You should now have 4 thread toward the back of your machine which you need to place under the presser foot and to the left side of the machine. There is also a VHS video that goes with the machine to help explain how to thread your serger. Also be sure that each spool of thread is in the tension of the upper colored tension wheels. If it is not, then your stitiches will be loose. Good luck and I hope this helps. I had to watch the video several times before I got it. If you don't have the video, try ebay for and perhaps you can obtain one. The video is Speedylock 1600, instructional video, USA Part #136000016, Perhaps you can contact White and see if they have one you could purchase.
Good Luck Serging!!!!