Question about Singer 14SH654

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Looper problem on 14SH644 Singer Ultralock Serger w/differential

How do you adjust the timing and align the lower thread loopers? Where can I locate a MAINTENANCE manual?

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  • nata_jane May 11, 2010

    Does your needle hit your lower looper, or slide behind it? Let me know because that is what mine is doing... I'd love to hear your answer if you get one on this.

  • Tanya Arcuri-Gout
    Tanya Arcuri-Gout Dec 07, 2013

    did you ever get an answer?? my lower looper just broke and that must be why

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You can find free manuals to down load from singer ..

http://www.singerco.com/accessories/manuals.html

Please vote !!

Posted on May 14, 2010

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Try www.sergerparts.com there you can find a nice tutorial on how to set the timing.

Posted on Aug 19, 2010

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sergers the most frustrating machines. Every time you change fabrics you go through a tension adjusting phase.

First make sure you have threaded the machine in the proper order. upper looper, lower looper, then needles from right to left. Always thread any machine while the presser foot lever is in the UP position.

If you ever break a thread... you MUST pull all threads and rethread using the proper order.

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2 Answers

My serger will only sew a few inches, then the thread on the lower looper breaks. I have checked threading, rethreaded many times.


Been there, done that. Old serger almost went out the window more than once.

Raise the thread antenna and loopers to their highest positions.

Set the tensions to zero. If your serger has auto-tension, raise the presser foot as this also opens the tensions.

Begin threading from the right as indicated in your manual or on the door of the serger.

If this continues, the serger may need to be serviced as the timing could be the problem.

Ask before leaving the serger as the service cost usually starts around $100.

I finally gave in and bought a Babylock with instant jet-air threading.

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Lower looper problems


Some sergers require they be threaded in a particular order. If not, they do not "knit" the threads.

Raise the thread antenna to it's highest position.

Open the tensions (set at zero). If the tension settings are automatic, raise the presser foot to open the tension settings.

Turn the handwheel so the loopers are at their highest position. There may be a mark on the side of the serger to match up with a mark on the hand wheel for this.

Open the front of the serger and the threading guide should be printed on the inside of the serger door, or on the serger.

Start at the right and note which looper is threaded first and then the needles.

You can find more information and manuals at the Singer Co website.

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I had read where someone said their lower looper tension dial had pulled apart. Sure enough, mine had too. We snapped it back together and Voila problem solved!

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1 Answer

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