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Have a juki tension top and bottom loose,top tension mechanism tight what do i do?

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  • Juki Master
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Remove the thread from the machine. ALWAYS RAISE the presser foot and re-thread from the beginning. Verify that the thread follows the correct path. Set the upper tension to the midway point between high & low number.

Re-install the bobbin (make sure it turns the correct direction in the bobbin case). Thread the bobbin thread through the bobbin tension.

Test your machine.

...

Posted on Dec 15, 2016

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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

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

3 Answers

I am using a Juki DDL 8700 thread to tight & not pulling through needle & cactching bottom thread


needle too small or machine out of time. to time machine theres a mark on needle bar. lower needle bar till mark shows and raise bar till even with bar guide. take off feeder plate so u can see needle in relation to hook. when mark on needel bar is even with bar guide the hook should be 1/16 fron passing the needle. if not loosen 3 screws and trial and error it to get it right. use a small screwdriver and tighten just on screw when u hab aglined the hook to needle. do a full rotation and watch where needle is and needle bar mark. needel should be as clost to hook without touching.

Dec 30, 2014 | Juki DDL-8700

1 Answer

Juki DDL 227 top needle keeps breaking


Needle breaks
1.the needle is damaged
2.the needle is not correctly inserted
3.wrong size needle for the fabric
4.the wrong foot is attached
5.the needle clamp screw is loose
6. Top tension is too tight
7. Machine could be out of time


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

Oct 08, 2012 | Juki Sewing Machines

1 Answer

I keep braking needles


Needle breaks
1.the needle is damaged
2.the needle is not correctly inserted
3.wrong size needle for the fabric
4.the wrong foot is attached
5.the needle clamp screw is loose
6. Top tension is too tight
7. Machine could be out of time

Oct 07, 2012 | Juki DNU-1541 Mechanical Sewing Machine

1 Answer

I would like instructions on how to set different stitch lengths on my Juki 1541-S.


Puckering is typically NOT a tension problem. But rather a bad needle or not the right needle for the project and thread. Sometimes it's uneven feed but since your 1541 is a walking foot you might have to get the feed timed. I know little about that.

I would first look at the recommended needle thread combo for the fabric. Then the presser foot tension.

Good luck.

Sep 21, 2012 | Juki DNU-1541 Mechanical Sewing Machine

1 Answer

Back thread loose and loopy - tension


If you have the instruction manual, you might read the chapter which describes the proper adjustment for threads and fabrics.
If you do not have one, try to find it on eBay. It is the huge source of everything.

Feb 20, 2012 | Juki MO-644D Mechanical Sewing Machine

1 Answer

My machine is a Singer Inspiration 4210. My stitch on top looks fine at first glance but it is birdnesting underneath. What should I do to correct this?


Check your top tension. It sounds like it may be too loose or the bobbin tension may be way too tight. Most likely it is the top tension that is incorrect though. The TOP tension effects the bottom side of the stitch and the bottom tension effects the top. If the top tension isn't tight enough it won't draw the thread up through the top side taunt enough and the excess underneath makes a big loopy mess.

Jul 29, 2011 | Singer Inspiration 4210 Mechanical Sewing...

1 Answer

How do I adjust tension top thread too tight bottom


The bottom tension is too loose. If your bobbin is in a case there is a little screw on the side that will tighten the plates and increase the tension. Test your thread coming out of the case as you slowly make adjustments to the screw. A slight bit of resistance is what you want. If your sewing still puckers you may have to loosen the tension on the top. Sew on a scrap and go toward the smaller numbers to loosen the top tension until the stitches meet between the two layers of fabric.

Dec 21, 2009 | Janome 6019QC Mechanical Sewing Machine

1 Answer

I cannot get the tension set on my Juki TL98QE quilting machine. When I think I have the correct tension, I can sew for about 6 inches and look at bottom of fabric and it has begun looping again. The...


Is your top tension set tight? If not, it may be a problem with the tension spring and if it is a new machine will be covered under warranty. It may also be that the bottom tension is set too tight. Not a major problem

Apr 25, 2009 | Juki TL-98Q

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