Question about Brother XL-3510 Mechanical Sewing Machine

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Bobbin tension i put it all the way to zero and it still is too tight

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I had the opposite problem it may be that the lower tension is too tight (mine was too loose).
To fix it you have to take the bobbin case out completely to access the tension adjustment screw. - Remove the 2 screws holding the metal plate with a nickel and remove the plastic piece over the bobbin case - there is a small metal lever on the lower left side that needs to be pressed down. You can then remove the bobbin case. There are 3 screws - the center one is the tension adjustment. It was painted green on my machine.  It appears that it is not a regular setting change, but a bad adjustment from the factory. So if you don't feel comfortable doing all that returning the machine for another will likely fix the issue.

Posted on Mar 26, 2009

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Why can't thread tension be adjusted?


Upper thread breakage is usually caused by incorrect threading, the tension being too tight, or the thread is wrapped around the spool pin or catching somewhere in the thread path.

Remove the thread completely from the machine.

Install a brand new needle making sure it is compatible with the thread and fabric.
All About Needles

RAISE the presser foot and rethread the machine making sure it follows the correct thread path (consult the owner's manual). Verify that the bobbin is spinning the right direction in the bobbin case and the bobbin case is properly threaded.

Set the upper tension somewhere around the midway point between high & low numbers.

Retest.

If problems persist, there may be debris buildup stuck in the tension disk. Remove the thread. RAISE the presser foot, set the tension all the way to zero. Dampen a length of pearl cotton with rubbing alcohol and gently pull the pearl cotton DOWN through the tension disk a couple of times. Rethread with regular sewing thread, reset the tension to the midway point and retest.

If cleaning the tension disk does not help, then it is possible the tension disk is malfunctioning or broken. Take it for service.

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Feb 22, 2016 | Sewing Machines

2 Answers

Top thread too tight. Bobbin thread too loose. Bobbin thread bunches up underneath material. The feeder teeth can not feed material through


first thing first - thread inside bobbin should be tightly wound in. Insert bobbin into bobbin case and thread through slot and under the spring. Spring has small screw which regulates the tension. Hold the thread like yo-yo and jerk a little down-up. It should drop just a little (not run down) - that is usually required bottom thread tension,
if not, regulate with the screw. Set top thread tension 3 and sew. If still looping under, increase the top tension higher till the looping disappears. .

Nov 03, 2015 | Sewing Machines

1 Answer

Machine is 30+ yrs old and the tensions settings are ALL screwed up so it won't sew even tight stiches...need help setting all (3) tension dials...please help me!


Real Important: The objective is to even the top and bobbin tensions equally.
1. Remove bobbin case. Put bobbin in (rotating counterclockwise).
2. Put thread under the tension plate. Let the bobbin hang from finger and bob up and down lightly.
3. Adjust tension. The bobbin should extend one inch every time it is bobbed.
4. Put one drop of oil on race the bobbin case sets on top of. Replace the bobbin case and bobbin.
5. With the pressure foot up thread the top and give little tugs as you do this. There should be no snags or resistance. Make sure the thread goes in between the tension disc.
6. Now, put pressure foot down. Give a little tug to see if there is a resistance. Set the tension to four is a good start.
7. Try a piece of rag to sew. Set the tension on top to adjust for a perfect stitch.

Mar 04, 2015 | Sewing Machines

1 Answer

How to fix bobbin tension on a juki


first clean bobbin case loosen thread tension screw and clean under tension spring, hi pressure air is the best. its important to clean under tension part because material builds up and does not allow the flat spring to put the proper pressure on the bobbin thread. tighted tension (second screw) accordingly. all thread tension depends on thickness of goods being sewn. the heavier the good the more tension u need on top.

Apr 14, 2014 | Juki Sewing Machines

1 Answer

Brother XL-2600i upper tension too tight even when set to ZERO


I agree with you to take it back & buy another brand

Sep 30, 2012 | Brother XL-2600

1 Answer

Upper tension too tight. Have changed tension to almost zero. Have cleaned and oiled machine. Double checked thread is threaded correctly. Changed needle. Sometimes when sewing fabric will gather.


You need to check to see if your bobbin tensioner has broke. Look at your schematic to determine if everything is still where it's supposed to be. Good Luck.

Apr 19, 2011 | Brother Sewing Machines

1 Answer

I cannot seem to get the tention right, the threats pulls the material very badly and it is very tight


Is this a new machine, old machine, serviced recently??
Here is my regular checklist for stitching issues:

Change the needle and pick the right size for the fabric you are sewing, or ball point for stretch fabrics.
What thread are you using? good quality cotton wrapped polyester is good, Sylko Supreme, Metrosene, or Gutermann are all good brands.
Wind a fresh bobbin and keep tension on the thread spool and nudge the thread going onto the bobbin to ensure a neat even fill at consistent tension.
Clean out the rotary hook area and give it an oil. Clean between the tension discs on the top tension dial by turning down to zero to open up and running the edge of a piece of clean fabric waste between the discs.
Now check your bobbin tension, is it a front loading bobbin and bobbin case like the Brothers? If so, do the dangle test where you hang the bobbin by the loose end and see if it dangles, ie enough tension to hold the bobbin's weight, but will also release thread if you give it a gentle pull. If not, gently turn the tension screw on the bobbin case down a bit and try again.
Set top tension to the middle number on your machine. Now thread again paying attention to ensure the thread path is clear, raise the thread aerial if there is one, the thread is under tension in the bobbin correctly, and the top thread is also under tension when the pressure foot is lowered.

Set stitch length to 2.5. Now test sew, holding the two thread tails back out of the way as you start. Look at the stitch formation and adjust the tensions if it still looks too tight.

You can get lots of general info on www.sewing.about.com too which is helpfull.

Feb 27, 2011 | Sewing Machines

1 Answer

The bobbin thread is loopy on the under side of the fabric. I tried adjusting the tension setting but it didn't help at all.


Loops stitches on the underside is typically from the TOP tension being too loose, however it can also be the bobbin tension is too tight, or a problem with the needle. I would check them in that order.

Hold the bobbin thread and let the bobbin dangle. A slight shake of your hand should allow the bobbin to move downward (lets more thread out) but not so much that it just drops to the floor. When you put it in again and try sewing look at the top stitches. Do they look overly tight? THen the bobbin tension is too tight. The stitching should look the same top and bottom with no loops.

If both tensions seem to be alright check to see if the needle is: 1. the right size and type of the fabric 2. not bent

That should fix your problem :)

Jan 22, 2011 | Husqvarna Rose

1 Answer

Huge looping on bobbin side of fabrie


1. Unthread the top of the machine
2. Put in a new needle, flat side to the rear.
3. Lift the presser foot into the "up" position. (That releases the tension discs, so the thread can get deep into the unit.)
4.Rethread the top. After the needle is threaded, check the tension on the thread by pulling some thread through the needle to the rear of the machine, But first put the foot down but NOT on the thread. The needle should bow slightly before the thread comes through it, so it's going to feel "tight" but you will be able to pull it through the machine if everything is proper. (the dial should be on 5 or so) If there is no resistance on the thread, you may have some old thread jammed in the tension unit. Turn the dial to zero and raise the presser foot to release the discs as much as possible. Shine a light between the discs to make sure it's clean.
5. Check the bobbin tension by pulling on it's thread once you have it coming up through the hole in the needle plate. You should only feel slight resistance, nothing like the tightness of the needle thread. If it's value is zero the machine won't sew. There has to be some resistance on the bobbin thread but it's only slight not tight. If something has damaged the bobbin and it won't spin freely in it's casing, bad stitching will result.
6. Look for rough edges on the hole in the foot and the needle plate. There must not be any. If there are needle strikes that have put burrs in the metal, you have to smooth them with emory cloth sandpaper.
I hope this helps you get a good stitch!

Oct 23, 2009 | Husqvarna Viking 1

1 Answer

My top thread is really loose and bunching up on the bottom with the bobbin thread.


1. Unthread the top of the machine
2. Put in a new needle, flat side to the rear.
3. Lift the presser foot into the "up" position. (That releases the tension discs, so the thread can get deep into the unit.)
4.Rethread the top. After the needle is threaded, check the tension on the thread by pulling some thread through the needle to the rear of the machine, But first put the foot down but NOT on the thread. The needle should bow slightly before the thread comes through it, so it's going to feel "tight" but you will be able to pull it through the machine if everything is proper. (the dial should be on 5 or so) If there is no resistance on the thread, you may have some old thread jammed in the tension unit. Turn the dial to zero and raise the presser foot to release the discs as much as possible. Shine a light between the discs to make sure it's clean.
5. Check the bobbin tension by pulling on it's thread once you have it coming up through the hole in the needle plate. You should only feel slight resistance, nothing like the tightness of the needle thread. If it's value is zero the machine won't sew. There has to be some resistance on the bobbin thread but it's only slight not tight. If something has damaged the bobbin and it won't spin freely in it's casing, bad stitching will result.
6. Look for rough edges on the hole in the foot and the needle plate. There must not be any. If there are needle strikes that have put burrs in the metal, you have to smooth them with emory cloth sandpaper.
I hope this helps you get a good stitch!

Oct 19, 2009 | Husqvarna Sewing Machines

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