Question about White Sewing 1418 Mechanical Sewing Machine

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Tension loose I am in Mexico without my manual and have not used the machine before. The tension on the bottom thread is loose. How do I adjust the tension ? Natalie

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When you raise the presser bar it should lift a small U-shaped piece of metal inside the head of the machine directly pushing a release pin located in the center of the tension post. You have to determine whether this operation is happening before you go any further. Sometimes the screw on the lifter bar loosens and loses contact with that U-shaped piece of metal. If that is working properly, then on your tension unit itself, starting with the parts going from front to back, you have a thumb screw, a number wheel, a lock, a beehive-shaped spring, and the next piece is the tension release cup. This cup slides on the tension bar with the piece of metal sliding into the bar which is split. That slight peice of metal that slides inside could be deformed. If that is the case, tap it gently to bend it towards the machine. This is the best that I can tell you right now.

Posted on Dec 15, 2008


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Posted on Jan 02, 2017


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How to adjust bottom thread tension on my CE-5000 sewing machine

Unfortunately, the manual for your machine describes adjusting only the top thread tension.

Brother CE 5000PRW Operation Manual Troubleshooting

If you look closely at the area where the bobbin is installed and threaded, there is probably a little screw that adjusts the tension spring. That may be where the bobbin tension is adjusted. Beware though that a tiny adjustment could make a huge difference, so be sure to always mark where the screw was positioned before making any changes.

Another thing you can try is ALWAYS RAISE the presser foot when threading the top thread. Sometimes the top thread tension is an issue but appears on the bobbin side of the fabric.


Jul 11, 2017 | Sewing Machines

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I am having trouble with my Singer sewing machine 367. I can't seem to get the tension right.

You really need to get a manual. Trying to figure out the problems is difficult if you are not an experienced sewer. There is a manual on eBay right now for your machine.

A little about tension. 95% of the time it is the top thread tension. It will be the thread on the bottom of the fabric affected. If the the thread on the top is loose it is the bobbin tension. Do not adjust both at the same time. Start with the top tension making small adjustments and then doing a test on scrap fabric.

Check to see if it is threaded correctly, without a manual it may not be obvious if it is or isn't. Check that the thread is between the tension discs correctly.

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How to adjust the bobbin tension.

According to the manual, you should not need to adjust the bobbin tension (and I located other sites which stated the bobbin tension cannot be adjusted on this machine). Apparently, all the tension adjustment is accomplished through the upper thread::
"EN Thread Tension Upper thread tension Basic thread tension setting: "4". (1) To increase the tension, turn the dial to the next number up. To reduce the tension, turn the dial to the next number down. A. Normal thread tension for straight stitch sewing. B. Thread tension too loose for straight stitch sewing. Turn dial to higher number. C. Thread tension too tight for straight stitch sewing. Turn dial to lower number. D. Normal thread tension for zig zag and decorative sewing. Correct thread tension is when a small amount of the upper thread appears on the bottom side of fabric. Lower thread tension The bobbin tension has been set correctly at the factory, so you do not need to adjust it. Please note: - Proper tension setting is important for strong seams. - There is no single tension setting appropriate for all stitch functions, thread or fabric. - A balanced tension (identical stitches both top and bottom) is usually only desirable for straight stitch construction sewing. - 90% of all sewing will be between "3" and "5". - For zig zag and decorative sewing stitch functions, thread tension should generally be less than for straight stitch sewing. - For all decorative sewing you will always obtain a nicer stitch and less fabric puckering when the upper thread appears on the bottom side of your fabric. 1 A B C 22 D"

Doing further research, I found this statement on a machine review site:
"After reading reviews online from where I've bought my drop-in bobbin machines, I think many of the negative reviews are due to the bobbin thread coming up without laying across the bobbin. It can cause the stitches to look very sloppy and no amount of tension adjusting can fix the stitches."

There are several machine review sites wherein 4423 owners stated their disappointment in the 4423's performance. Some said the machine failed almost immediately and others said the machines developed problems when sewing heavy fabric.

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1 Answer

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Loose on bottom is usually caused by too loose tension on top thread, check top tension and thread is in the tension device.

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Stitch too tight on top, too loose on bottom

This is a problem with thread tension. The needle thread is too tight and the bobbin thread is too loose. I don't have one of these machines, but there should be either screws or knobs to adjust. Look at your manual. Here's a page I found on bobbin tension.

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Bottom thread too loose; tried rethreading top thread, cleaning bobbin case, refilling bobbin, changing needle, adjusting top tension

Check for correct bottom thread tension.
It's provided by a flat spring on the bobbin holder.
When the bobbin is correctly installed, pulling on the thread
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I have a Brother LS-1717 Sewing Machine, it was given to me, without the manual. My thread keeps jamming and the thread is lose on the fabric. Also I have these dials on the front and I can't figure out...

You really need a replacement manual and Brother is excellent about providing them. Go to if your machine was sold in the U.S. If not, you'll need to contact Brother International.

Loose thread and jams usually mean the tension needs adjusting. If the loose threads are on the underside of the fabric, it means that the tension on the top thread is too loose. Be sure to have the pressure foot down when you adjust the tension and only move the dial a tiny bit at a time. Also, when you begin sewing, hold the top and bobbin threads securely in your left hand for the first few stitches. That bit of tautness helps prevent 'birds nests'.

Hope this helps!


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1 Answer

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oil the shaft for the presser bar and keep moving it up and down(it may take a while) until it moves freely. Always use Sewing machine oil Not 3N1 oil.
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on top and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension). If you have loose thread on top your top tension is probably too tight and your bobbin thread too loose

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1 Answer

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From your description it appears that you have tried tension settings on the upper tension control adjustment knob without success.
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This is a tension problem.
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It is almost impossible to explain how to adjust the bottom tension you need to be shown.
Somewhere in your manual it should explain how to do this.

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