Question about Brother CE4000 Computerized Sewing Machine

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I cannot retrieve the lower thread on my Lervia KH 4000. I have checked that the bobbin and the machine are threaded right

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Brother XL-5130 Sewing Machine

Put the thread through one of the holes. Then put the bobbin on the spindle. Pull about 3 or 4 inches out of the hole and hold on to it. Start winding the bobbin. After about ten turns, or when the winding thread is secure, you can stop the machine and cut off this 3 or 4 inch tail. To insure that the thread winds up and down the bobbin and not off the top or bottom, there is probably a metal bobbin tension disk that the thread must pass around before it goes to the bobbin. It is probably on the left of the machine and may or may not be part of a thread guide. The thread must pass around this disk on its way to the bobbin in order to put tension on the thread so it will wind properly. If you can't find the disk, which is a small metal button or screw with some type of somewhat moveable spring cap, you can just get the thread to pass through your thumb and forefinger. Hold your hand 6 or 8 inches to the left of the bobbin and pass the thread between your thumb and forefinger so that it makes the thread go in a direct straight line to the bobbin. Pinch the thread only enough to keep it taught but not tight and let it flow through your finger to the bobbin. The thread should go up and down evenly on the bobbin. If not, move your hand up or down to position it so the thread will wind up and down smoothly. It will not be necessary to move your hand once you find the correct position needed for winding.

Posted on Jul 20, 2007

SOURCE: needle not picking up bobbin thread

Check the timing.

Posted on Mar 06, 2008

  • 323 Answers

SOURCE: threading lower bobbin

There are some different bobbin cases for different machines but the one you have is a pretty common one with a finger sticking out on top. If you examine the bobbin case you will see a slot on the side of it and there is another piece of metal screwed onto it. This is the tension they are describing.
To thread it properly, turn the bobbincase upside down and insert the bobbin in the case so you can see it. Place your thumb on top of the bobbin and pull the thread through the slot on the side of the case and under the piece of metal(the lower tension) which I described to you earlier.. When you have done that, remove your thumb from the bobbin and pull on the thread. It should have some tension on it.
Next,placing a thumb or finger on the bobbin to keep it from falling out, turn the bobbin case over.
Keeping the finger sticking up lift the lever on the
front of the case and insert the bobbin and bobbin case onto the spindle inside the hook assembly(The part that is in the bottom of the machine that turns when the hand wheel is turned.) Don't worry about the thread that is sticking out.
Holding the upper thread under the presser foot ,turn the handwheel towards you until the top thread pulls the lower thread to the top. Pull the thread to the left of the machine, insert your fabric, lower the presser foot and begin sewing
One more thing , The finger sticking up on the bobbin case will go into a slot on the ring holding the hook inside the machine.
Hope this solves your problem.
Be sure you thread the upper part properly. It should go through the tension, then the take up lever and then the needle. Tension should be set at around 5
sewman7

Posted on Jan 17, 2009

  • 1 Answer

SOURCE: Lower Bobbin not threading

the thread will not catch the bobbin and the feeder will not turn

Posted on Jun 21, 2009

bargainbox
  • 1388 Answers

SOURCE: The lower (bobbin) thread on my brand new Brother tangles

Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.

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....

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

Best Wishes
Martyn
Bargain Box in Australia

Posted on Sep 08, 2009

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1 Answer

I was attempting to pick up the bobbing thread, before sewing. The needle is now stuck in the down position and the handwheel is unresponsive but the motor is whirring when foot pedal is depressed.


Do not press the foot pedal. Continuing to run the motor when the machine cannot work properly could irreparably damage the motor. Unplug your machine. Cut the top thread at the needle, open the bobbin area and try to remove the bobbin case. You may have to patiently snip tangled threads, but eventually you should be able to get the bobbin case out. Once that happens, the needle will most likely be free.

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Has someone got a manual for lervia 564


This site lists manuals for Lervia (although not your model), however, sometimes machines are sometimes similar enough that other manuals are helpful:

http://safemanuals.com/page/search/Lervia+564

manual for lervia 564

Kompernass LERVIA KH 4000 Operating Instructions Manual

..

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Oct 27, 2013 | Sewing Machines

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Thread keeps breaking and underneath not sewing right


There may be a broken thread in the bobbin case effecting the lower thread tension. clean all parts and determine if the upper thread or lower thread is breaking if cleaning does not help. double check your machine threading and bobbin installation direction.
http://www.mastersewusa.com : this site has many operator manuals if the above suggestion does not help.

Aug 21, 2011 | Brother LS-2125 Mechanical Sewing Machine

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The needle thread keeps getting caught as the bobbin thread is brought up initially and again as I sew. It has been looked at by repairmen but no solution has been found. Should I replace the bobbin...


Hello

The bobbin might not be in the case just right, or the case not in the machine just right.

Remove the bobbin case and make sure the thread from the bobbin is feeding from the spool in a clock wise direction and through the guide on the side of the bobbin case.

Raise the needle to it's highest position and this will move the shuttle to it's proper position.

Lift the lever on the back of the bobbin case, with the arm on the case pointing toward the ceiling and slip into the shuttle.

Bend your head down and you will see the shuttle has a slot for the arm to fit into.

Once you get the feel for this you will not have to bend down for a bird's eye view!

Always thread a sewing machine with the presser foot up. Make sure the threading sequence is correct and the thread has not slipped out of the take up lever.

Hold onto the top thead end and lower then raise the needle to pull up the bobbin thread. Pull both threads under the presser foot and to the back of the machine.

You should now be able to sew without any issues.

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1 Answer

Cannot get the tension right and the thread keeps braking


Good day!

please try this simple tips:

Good day!

A sewing machine operator can often help themselves when their machine does not operate properly.
Here are some simple instructions, which if properly used can save time and mechanics service calls.
TROUBLE;UPPER THREAD KEEPS BREAKING;
This could be trouble;================Do this;
1.Top tension to tight================loosen tension 1 turn
2.Machine improperly threaded=========check threading
3.Thread twisted on guide post========"
4.Thread twisted out of tension======="
5.Take up spring bent or broken=======Check action of spring
6.Thread jumped off pull off finger===Check threading
7.Needle bent or burred===============new needle
8.Bad cone of thread==================try another cone
TROUBLE;LOWER THREAD KEEPS BREAKING;
1.Bobbin tensionspring to tight=======Loosen tension slightly
2.Bobbin threaded wrong===============check threading
3.Bobbin wound to tight or uneven=====try new bobbin
4.lint or thread on bobbin case=======clean inside case
5.Lint or thread inside hook==========clean inside hook
6.Bobbin case nicked bent or burred===check/change case
TROUBLE;MACHINE STARTED SKIPPING STITCHES;
1.Needle bent or burred===============change
2.Needle set in crooked===============Check
3.Thread jumped off take up spring====check threading
4.Thread jumped off pull off finger===check threading
TROUBLE STITCHES SHOWING LOOPS;
1.Forming loops on top of cloth=======Tighten bobbin tension
======================================or loosen top tension.
2.forming loops on bottom of cloth====Tighten top tension
3.Bobbin placed in case incorrectly===remove and replace
4.Bobbin thread slipped from under====check threading of
tension===============================bobbin case
5.Lint or thread in top tension=======clean between tension discs


Thank you and good luck.

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1 Answer

My Brother XL-3022 sewing machine has been running perfectly for years, then all of a sudden today I went to use it and while threading the machine I am not able to get the upper thread to draw up the...


There are a few easy and free things to check:
1- try a new needle 2- check that the needle is inserted the right way (one side has a long slot, usually this goes toward the back of the machine) 3- flip the bobbin over 4- clean any stray threads/fluff in the bobbin area
Another possibility is that the machine's timing is off- the bobbin thread isn't in place to be picked up at the right time- and that would need to be fixed by a sewing machine mechanic. But if this started suddenly, and not after hitting a pin or otherwise jarring the machine, then it probably can be solved with one of the easy/free solutions above. Good luck!

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I went back a couple of days later. Reread the manual and started over. I discovered my problem was that I was threading the bobbin wrong. Once I threaded it precisely as the manual stated it worked fine.

So this might be your problem. Make sure that the thread on the bobbin is wind on properly. It should be wound evenly. The bobbin must be threaded precisely as the manual says.
Try rethreading the bobbin and the machine
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1 Answer

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Threading the bobbin - winding thread onto the bobbin.

Position the new empty bobbin onto the vertical bobbin rod next to the end wheel. Click the rod to the right to engage drive. Hold the outer end wheel with left hand, and rotate the inner wheel anticlockwise by about a 1/2 turn (it stops) this removes drive from the foot and needle mechanism.

From a spool of thread on the top, thread to a loop/post on the left on the top. Then back to the bobbin you want to wind. Thread through a hole from the inside-out. Hold the thread vertically above the bobbin while you depress the footswitch to start winding. Let go when it's turned a few times.

Move bobbin shaft left, and tighten end wheel after winding enough.

Fitting bobbin-

Move footplate towards you, insert bobbin in hole so that bobbin rotates anticlockwise when thread is pulled, then pull thread into the fine notch towards you. After this position thread away from you, and slide the footplate closed.

To start / load thread. Hold the end 3" of the thread through the needle behind the sewing foot. hand crank towards you to sew first stitch in air. This should retrieve the lower thread - which you can catch with a handy pair of scissors. Then pull both threads rearwards - ready to sew.

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