Brother LOCK-523N overlocker threading

Hi, I ran into this problem on a Brother Serger and if your machine is set-up for four thread overlock, this may help. Set all the tension control knobs to"3". The overlock may seem loose but see if the skipped stitches gets better or worse. Remember that the loopers are just that, they work best when the thread is not pulled tight. I found that if I took the looper tensions back up gradually, I got a pretty nice overlock at about "5" without skipped stiches.

How to thread brother lock 530 Brother Sewing Machines

Follow the instructions exactly. Each thread needs to threaded in the order stated in the manual. Threading out of order will guarantee failure. Also, whenever a thread breaks or comes unthreaded during use, it is very difficult to rethread that one thread and be successful. If it doesn't work the first time, just bite the bullet (save yourself some frustration) and rethread all the threads from the beginning.

NOTE: ALWAYS THREAD with the presser foot in the raised position! When threading through the tension disks, give each thread an extra little tug to make sure it is seated completely.

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.

The Anatomy of The Best Serger Tension My Tips Bonus Unpick it Serger...

Make It Handmade Perfecting Serger Overlocker Tension

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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ensure the tensioners are not too tight, reduce the tensioner to see if this helps. depending on thread type nylon or cotton etc the tension needs to match to control the feed to the needle if it is too high the thread who stick and when the needle makes the next stitch it can break the thread.
I hope this was useful.

The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

here are links to manuals for the machine
http://www.sewingpartsonline.com/instruction-manual-brother-523n.aspx
http://www.sewingpartsonline.com/instruction-manual-brother-523n-instant-download.aspx

hi Patricia.
It could be the needle, the tension too tight, mis-threading, the thread weight.
try these links out and see if it helps you.
Sewing Machine Problem 1 Thread Breakage
Sewing Machine Thread Keeps Breaking
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Brother LS 1217 Mechanical Sewing Machine upper thread keeps on breaking...

set all to 3-4

globe overlocker stitching reverse