Question about Juki DDL-8700

1 Answer

Tangle in bobbin area, stuck needle

"tangled in the bobbin area. I would only be able to sew about an inch of fabric before the problem started. The needle would get stuck and not move...and I would literally have to get needle nose pliers out to unsnarl the thread under the needle...what a mess! "
I have the same problem. Have a Juki DDL-8700 and sewing heavy felt.  On the backstitch the bobbin gets caught and snarls a tangle in the bobbin case.  Now, the needle won't move despite a clean up.  Is there a way to remove the casing?  How can I avoid this problem.  Thank you!

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Juki Master
  • 1,388 Answers

Please TRY the solution BEFORE giving your considered rating.




Ensure that all is clean and free of lint and jams, this is the most likely cause....now for tension troubleshooting .......

This solution is for tension problems...if you cannot form any sort of stitch, the issue is quite different, so please let me know if you need a different problem solved.....

It is quite long, but just work through each section in order.
The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.

QUICK SUMMARY FIRST:
Ensure sharp new needle, 
Thread guides and Bobbin are Clean & Clear of lint
Set Top Tesion to 4 ....then....
Balance Bobbin to suit.

TOP THREAD TENSION:
If the looping threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your 
projects). 

IS YOUR NEEDLE SHARP ?
If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !

TOP TENSION & GUIDES:
Make sure that when you thread the machine the presser foot is up so the thread goes between the discs and not to one side, top tension between 4 and 6, and that you have threaded through all the guides, including the last one, usually on the needle arm, just above the needle clamp.

It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.

If tensions appear correct, and the thread is definitely in the channel between the discs, but still too loose and looping, try raising presser foot and remove your thread.

Now, with a 2" (50mm) wide strip piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or denatured spirit, gently insert the fabric strip and clean between the discs with 
a see saw / to and fro action.

In the worst cases, gentle use of a needle to pick & remove the jam may be necessary, but be very gentle and make sure the tension is set at Zero and the presser foot is raised, (to 
disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.

BOBBIN TENSION:
Far less common, but if the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension. 

I would not recommend fiddling with bobbin tension without good reason, it may end up with missing small screws and spring pieces, however, you can take the needle plate off to clean 
the hook race area (where bobbin case sits) 

...this is just good housekeeping, my wife does this every time she replaces the bobbin....

just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint. If there is a significant amount of lint, use a vacuum and small brush to get the worst.

Then wipe all this area with a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit, especially if there appears to be fine dirty deposits....oil and lint combine to conspire against you.

If it seems likely that you ......really ....do .....actually .....need .....to adjust the bobbin case, first check there is no lint trapped in the metal spring where the thread is tensioned. 

TOP LOADER:
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....

tangle in bobbin area, stuck needle - 4c76dc1.jpg ...the other screw at one end is holding it all together, so beware....it is not a tragedy to undo the whole lot and clean it, but very gingerly and lay the bits out in sequence and orientation, or you risk tearing your hair out !

FRONT LOADER:
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all 
back properly.
165ca5c.jpg FINISHING UP
GETTING THE BALANCE RIGHT:
When you are certain there's no trapped lint in top tension or bobbin, set the top tension to 4 and the bobbin tension to a point where you just begin to feel resistance.

Try using good quality thread of contrasting colours so you can more easily spot the changes.

Set your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5 etc) and sew a sample for a few inches and check the result.... adjust the bobbin tension screw very little at 
a time, perhaps 1/16 of a turn.

You may find you are playing with this balance for some little while and if you are putting the needleplate on and off each time begin to think it cannot be correct to do this.....BUT....it is, 
and eventually, you do get a "feel" for the correct tension and then it happens quite quickly.....as a user you won't be doing it very often unless there is lint built up (or are there small hands at work around the house !?!?!)

OTHER ISSUES:
If you live near the ocean as we do, salt air can play havoc with metalwork inside and out, so to help minimise this, keep a few small packets of dessicant (silica gel) in your machine 
case....no case ? then make some sort of cover ! 

Same applies in any damp or humid environment, keep your machine dry and dust free.

Budget for a proper full service every couple of years (more often if heavily used) and if you don't use your machine for a few years, be aware that old oil will dry out and combining with 
dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)

FINALLY, A WORD ON THREAD:
If it is worth spending the time, energy and money on making something that you would like to give lasting enjoyment......use quality thread, .......it may seem to cost a little more at the 
time, but the results, ease of use and added longevity will be worth the extra, and as a bonus, your tension troubles may be fewer and further between, because there is a more consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks !

www.bargainbox.com.au

Posted on Nov 13, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

It keeps getting tangled up here the bobbin is underneath and keeps getting jammed


try changing the needle--make sure it's the correct one for the fabric
being sewed
rethread the machine ---using every thread guide
try using a different bobbin
try turning the bobbin over the other direction
clean under the needle plate and in the bobbin area for lint
also could be a timing problem and the machine would need to be
checked at a sewing machine repair shop

Apr 12, 2013 | Singer 3116 Simple

1 Answer

Top thread tangled in bobbin.


try changing the needle---flat side goes to the back side of the machine
also check the top tension
depending on the fabric your sewing on--the needle & thread have to work
with the fabric--example light fabric needs a different needle & thread than
a heavy fabric
check to see if the thread is coming off the thread take up lever when you
sew.

Apr 04, 2012 | Singer 8280 Mechanical Sewing Machine

1 Answer

Bobbin thread tangles


when this happens have you check to see if the thread has come off the thread take up lever?

Feb 09, 2012 | Brother CE5000 Computerized Sewing Machine

1 Answer

When i start to sew on my Janome sewing machine model Sewist 525S it does a couple of stitches on any stitch type then bangs then sews then bangs then stops. I look to see the problem and the bobbin and...


There has to be a problem in your threading or your needle. You may have the needle inserted backwards, flat side has to face rear or the needle is bent. Totally unthread your machine and make sure that there are no tangles and that it feeding the right way. Watch how they show your for threading and winding the bobbin, plus threading the bobbin. Good luck, but I truly think it is in your threading.

Sep 25, 2010 | Brother LS-1217 Mechanical Sewing Machine

1 Answer

Needle's thread gets tangled in bobbin


First, open the needle plate and make sure the bobbin area is clean and free of lint and thread.

Check the needle to make sure it is not bent and is properly inserted into the holder - usually with the flat side facing to the back of the machine.

Refer to your manual for bobbin insertion to be sure the thread is feeding from the bobbin in the correct direction and through the proper guides.

Always thread a sewing machine with the presser foot up. This opens the tension control and allows the thread to properly enter.

When the foot is down, the tension control closes to the sewing setting and if the thread is not in place, there is no tension on the thread and it gets loopy.

After threading, lower and raise the needle while holding onto the thread tail. This will pull the bobbin thread up through the needle plate. Take hold of both threads and take them under the presser foot and to the back of the machine.

Hand walk the first stitch when sewing and this should keep the top and bottom thread from tangling.

When stopping to change the position of the fabric (turning a corner, sewing a curved seam for example), do so with the needle down into the fabric. This not only anchors the fabric so it does not slip, but prevents mis-stitching.

If you are doing everything according to the manual and are still having a problem, the machine may need to be professionally serviced.

Feb 23, 2010 | Elna 1010

1 Answer

The sewing machine just started getting stuck down in the bobbin area. Never happened before. Don't know what to do. We're having a group sewing circle making pillows with "Laura Ashley" fabrics. Is there...


I am not sure what is happening. But this is what I woudl try:

Open the needle plate, remove the bobbin and bobbin case and clean away any lint or thread that may have accumulated there.

Re-thread - always with the presser foot up.

Re-place the needle with a new one.

If this is a vertical bobbin (inserts at the side or front of the machine and not a drop-in) make sure the lever on the bobbin case is held open when you insert the bobbin & bobbin case into the shuttle.

When you need to adjust the fabric (rounding a curve or turning a corner), make sure the needle is down through the fabric before lifting the presser foot. If you do not, there will be a mis-stitch and sometimes the thread will tangle in the area of the bobbin.

Feb 18, 2010 | Kenmore Sewing Machines

2 Answers

Thread tangled in the bobine


I had this same problem yesterday. I took apart the needle tension casing and now it doesn't get tangled or stop. The only thing is the bobbin is not sewing...it looks fine on the top, but the bottom is just loose loops.

Jan 17, 2010 | Singer 3116 Simple

1 Answer

Its like it is getting tangled in bobbin casing


loopy on bottom means upper threading or tension is wrong

Aug 10, 2009 | Brother XL-3510 Mechanical Sewing Machine

1 Answer

All tangled up


take out the bobbin.. then thares 2 clips/ on the bobbin. open these and release the innner bobbin now remove the 2 innner parts. then useing a small brush clean out the bottom of the machine.
replace parts. re thread the machine from start. replace in freshly wound bobbin.
should do the trick for you/

Sep 22, 2008 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Sewing machine not making stiches


At first, my machine was getting all tangled under the fabric and then would stop working because it was tangled in the bobbin area. Now the bobbin area is staying clear but there are no stiches being made. I have no idea what to do. melissashulga@yahoo.com

Sep 07, 2008 | Brother LS-2125 Mechanical Sewing Machine

Not finding what you are looking for?
Juki DDL-8700 Logo

764 people viewed this question

Ask a Question

Usually answered in minutes!

Top Juki Sewing Machines Experts

Pete Alaniz

Level 1 Expert

13 Answers

SewTechWayne
SewTechWayne

Level 2 Expert

186 Answers

Derek Massey

Level 2 Expert

92 Answers

Are you a Juki Sewing Machine Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...