Question about Juki DDL-8300

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Hello, I have a juki DDL 5550, runs great, But the tension is off. Top thread bunches up on bottom side of fabric ( bobbin thread looks ok)\r\nThanks,S

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Soulds like your not geting the top thread all the way in the tension disk. Make sure you have the presser foot up when you thread the machine. also after you get it treaded check to make sure you have tension, with the presser foot up you should have not tension and with it down it should be very hard to pull.
hope this helps

Posted on Mar 18, 2011

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1 Answer

When i run a straight stitch, the top of the fabric looks well sewn; the thread on the bottom of the fabric, however, bunches up-it looks nothing like the top stitch.


Is it really the bobbin thread that is bunching under the fabric, or is it really the top thread that is creating loops and "bird nests" under the fabric???

Rethread your upper thread. BEFORE you thread the upper thread, be sure to RAISE the presser foot. This releases the upper thread tension disks so the thread is firmly seated in the tension disk.

If it continues to be a problem, then the upper tension needs to be tightened. Adjust slightly, then test. Repeat until the upper and lower threads meet in the middle of the fabric.

...

Sep 24, 2015 | Sewing Machines

1 Answer

Juki DDL 8500: Bobbin thread is not coming up to the top side and the top thread is looping on the underside. Bobbin thread slides right out, and I've had no luck adjusting the top thread tension.


What thread are you using and what are you sewing? I'm assuming the machine is stitching correctly and it is just a tension issue. I would test each thread seperatly by hand and see if one thread is too tight or too loose. Thread on the bottom usually mean the top thread is too loose however it could by the bobbin is too tight. It could also indicate a slight timing issue or a burr on the hook. Is the thread shredding or getting damaged?

May 02, 2015 | Juki Sewing Machines

3 Answers

The bobbin thread on my Juki DDL-8700 is loose and bunching up. I have messed with the tension on both top and bobbin and I cant get it tightened up. Please help!


Hello Lacinda have a good day to you concern loose or missed stitches please check next: 1-try to change bobbin case with new one. 2-check timing between needle and hook by -make needle bar at lowest position and you can see two mark line at needle bar. -bring the needle bar at second line from down side then check the flat part from needle comes with tip of hook ( if yes means timing is OK , if not means you need to adjust the hook timing . 3-check the ginger guide for hook try to move it foreword or backward to pass thread smoothly. if this is helpful OK if not please send email, i try to do the best to help. best regards ASHRAF ABOZID CAIRO - EGYPT aabozid@hotmail.com

Feb 24, 2015 | Juki DDL-8700

2 Answers

I have juki 1541industrial machine . It started sewing upside down . Instead of nice stiching on top show side it on bottom. Any ideas


This is caused by the tension between the bobbin and needle threads being out of balance. If the knots between the stitches are on the bottom side, then you need to tighten your needle thread tension a little at a time until the knot is in middle of fabric. The reverse of this is if the knots are on the top, then either your bobbin tension is too loose or your needle thread tension is too tight. If this occurs, then loosen your needle thread a little at a time to see if knot goes down in middle of fabric. If it does not, then you need to increase the tension on your bobbin thread. This done by taking bobbin case out and tighten the small screw located in the middle of the spring on the side of the case. You only need a slight, steady pull on the bobbin thread - the more you put on the bobbin, the more you are going to have to put on the needle thread.

Feb 13, 2015 | Juki Sewing Machines

1 Answer

Why is there extra thread underneath the fabric


Check the tension on the top thread. Be sure all is threaded correctly. If the top tension is ok, the bobbin tension may need to be tightened. Also, be sure that everything is oiled properly, as this can affect function.

Oct 08, 2014 | Juki Sewing Machines

1 Answer

My stiches are loose on the bottom of my banner - is it the bobbin or a tension issue?


If the threads on the back are loopy, you need to tighten the top tension. If you have a spare piece you may want to run some of the plastic through the machine until you get the tension correct. If the top tension is too loose, the stitching will just pull out.

Jul 16, 2014 | Juki DDL-8700 Industrial Straight Stitch...

1 Answer

Bottom thread on Juki DDL-5550 is coming up. Top thread seems to lie flat


Check your upper thread at the spool. I've had industrial machines randomly throw a loop around the spool holder spindle which is hidden under the spool itself.

Also check your threading guide to be absolutely certain you are threading it correctly. Also make sure needle/thread diameter are suitable for each other.

Good luck.

Dec 02, 2012 | Sewing Machines

2 Answers

I bought a second hand Juki industrial machine , model DDL 5550-7, but struggle to get the tension of the stitches right. where do you set the lower stitches tension


upper tension sets the lower thread tension (upper thread is what you see on the underside of the fabric). Bobbin tension is for the thread you see on the top of the fabric

Jul 01, 2009 | Juki MO-644D Mechanical Sewing Machine

1 Answer

Juki DDL 8300


You need to do a tension test.
Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} Tension assembly test. To do this test. Pull the thread through the tension assembly and test it to make sure the tension is working correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or something in the middle. Raise the presser foot and pull the thread through the tension. It should pull easily!! Lower the presser foot and pull the thread. It should pull noticeably harder.)
If it doesn't do this you ned to rethread it through the tension discs and make sure the thread is between the discs.
sewman7

Oct 11, 2008 | Sewing Machines

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