Question about Juki DDL-8700 Industrial Straight Stitch Sewing Machine, Servo Motor

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My juki 8700 h frays thread while trying to sew

I've found that the hook assembly had burs i filed them off, but it keeps fraying the thread.

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Hello Daniel, I suggest you start with a new needle. Back off the needle thread tension and the bobbin thread tension to a minimum and see how it sews. If it does not ravel the thread, you can increase the tensions until you acquire the stitch you want.

Posted on Mar 27, 2014


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Where do I oil?

I found my manual and oiled my machine. Then I found the solution to the thread breaking (online) - I just needed to drop my feeder! Thanks anyway. Alma

Posted on May 08, 2009

  • 161 Answers

SOURCE: I recently purchased a Juki

perhaps you have the wrong needle or its not in the proper position?

Posted on Sep 12, 2010

SOURCE: the thread on my Juki machine keeps breaking when

there's a tension dial with numbers-0-9 --above the needle area- the smaller the number the looser the tension--the higher the number the tighter the tension

thread breaking-try this
try rethreading the machine
thread tension to tight
needle is bent or blunt
needle is inserted incorrectly
the thread is either too heavy or too fine for the needle

try this & see if it helps you
Cut 6-8 inch piece of thread of the spool you are going to use for your project
Take the needle you are going to use for the project
& insert the thread thru the eye of the needle
& lift one end of the thread to a 45 degree angle
& if the needle is the right size for the thread it will slide down the thread
But if the needle hangs on the thread you need one size larger needle for the thread

Posted on Oct 26, 2010

Tally Girl
  • 1133 Answers

SOURCE: how do you thread a Juki DDL-8700

Hi Vikki,
Here is an image of the threading up for your model Juki.
You can down load a manual for your Juki from their website, its a bit tricky to find so I'll paste the link for you.

just wait a bit for the file to build to your screen because its a large file.

I hope this helps you get using your machine.

Posted on Oct 11, 2011

  • 1564 Answers

SOURCE: upper thread keeps shreading on juki 1541

Without seeing your manual it's hard to tell for sure, but it is likely that your needle and thread combo is causing the problem. Another thing can be a burr or nick on the presser foot or needle plate. First change change the needle to a different one in size 18. If it still shreds we no it is probably the needle... size up to a 20. If it works... you are good to go.

If that doesn't work... take off the presser foot and examine the needle plate for burrs, stab marks, chips. Also examine the presser foot.

If you find a defect carefully smooth that with some very fine sand paper. and try sewing again.

Good luck

Posted on Aug 09, 2012

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1 Answer

Juki Lu-562 breaking, fraying thread. The tread will fray and eventually break a lot. Is there anything else besides a different size needle or burrs on the foot plate for foot feed?

Be sure that you are using only fresh, good quality thread. Old or bargain bin thread will fray easily. Does the thread have little hairs (fibers) sticking out? If so, get rid of it. Try a different type of thread, ie polyester thread. (FWIW, Coats & Clark used by a stand-by, but it is a lesser-quality thread these days.) Be sure to use the same thread in the bobbin--polyester thread will tend to cut cotton. Try flipping the thread spool over so it feeds off in the opposite direction. Make sure the machine's bobbin area is clean of any lint or debris. The tension may be too tight. The thread may be mis-threaded or the thread is restricted somewhere, ie wrapped around a thread guide or the spool pin. Be sure the thread is running through the thread guide immediately above the needle. Remove the thread and rethread from the beginning. You might try a different type of needle, ie top-stitch needle. Top-stitch needles have a larger scarf that will protect the thread as it pierces the fabric multiple times before forming a stitch. A Top-stitch or Metafil needle has a larger eye to accommodate bigger thread. Are you sewing unusually coarse fabric? It is abrasive and could be causing the excessive fraying.

If the fraying continues, there may still be a burr somewhere.

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I have an 8700 juki industrial machine and as I'm sewing the thread will not catch on the bottom bobbin. I'm frustrated.. It was fine the last time I've used it.

machines do not just go out of time. Is the top threaded correctly. did u miss threading thru the take up arm or take up spring change needle too.

Nov 26, 2012 | Juki Sewing Machines

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Does The Juki 8700 sewing machine have a automatic Thread Triimmer

final answer about this questionhello all
in case of normal machine you need to add many parts to convert from manual to auto thread trimmer ( need electronic motor with control - auto thread trimmer mechanic components - hook - feed dog - etc.... ) it's very difficult to change from normal to auto thread trimmer.
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Aug 17, 2012 | Juki DDL-8700

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Machine won't sew, seems as if the bobbin is not engaging, the top thread just seems to fray and not advance. I am not sure if I am describing the problem well. When I start to sew there is no thread...

Hi rjmcreations,

I will give you the website of a man who can answer any question you could possibly come up with...

You'll find his email address towards the top of the page. Good luck.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie

May 14, 2011 | Juki DDL-8700

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Upper thread fraying

You have a groove in one of your upper guides, or you have a bur on your hook assembly. Contact Robert at National Sewing Supply, 888-283-9640 if you would like more detailed information.

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Top thread keeps fraying and shredding

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Where do I oil?

I found my manual and oiled my machine. Then I found the solution to the thread breaking (online) - I just needed to drop my feeder! Thanks anyway. Alma

May 07, 2009 | Juki Sewing Machines

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