Question about Janome MyLock 634D Mechanical Sewing Machine

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The tension seems to have gone wrong the upper looper does not always appear on the sewing it comes and goes. I have tried all different tensions that worked fine before, I have changed the threads to one that were fine. The rolled hem and pintuck were fine yesterday but today its gone haywire. I have checked the needle and changed it (RH) sewing with 3 thread. I have checked that it is threaded correctly and am now at a loss! Wish I could send you a picture of a sample. Maybe you can send me a picture of how it should look?

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  • annapetroica Apr 18, 2009

    Your solution didn't help, my manual tells me everything that the site you forwarded me to. I have however resolved this problem myself with the help of an expert on overlockers, my tensions were all out because my machine had dirt and lint in it. It is now working beautifully.

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Posted on Apr 18, 2009

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1 Answer

Toyota overlocker sl3000 ; 3rd thread keeps snapping. How do I stop this ?


Third thread--is that the upper looper? Remove all the threads from the machine. Clip them below the thread tree, RAISE the presser foot, and then pull all 4 threads down through the needle. (Never Pull Up!!)

ALWAYS RAISE the presser foot.
Rethread beginning with the Upper Looper, then Lower Looper, then the needles. Be sure to ALWAYS thread in this order!! (On most newer machines, when threading the Lower Looper, always finish with the Lower Looper "draped" over the top of the Upper Looper.)

If a thread breaks, remove the threads and start over from the beginning as trying to fish a thread through the existing threads very SELDOM works.

Verify each thread path is correct.

When threading each thread and to insure the threads are seated in the tensioners, give each thread an extra little tug when going through the tension disk.

Be sure to oil your machine frequently to keep it operating smoothly!

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May 03, 2017 | Toyota Sewing Machines

1 Answer

Difficulty to do needle threading on S4D overlocker


Sergers are absolute "bears" when threading compared to sewing machines. If/when you get frustrated, walk away. It took me the majority of one day before successfully getting my first serger threaded properly. Using four different color threads is also helpful when learning the serger--especially when it comes to adjusting the tension.

It is very important to pay attention to the order the threads are threaded, as well as making sure the thread path for each is correct. (Consult your owner's manual as different brands will look different.) Most machines require that the upper looper be threaded BEFORE the lower looper because the lower looper thread will cross OVER the upper looper thread as the final step before going under the presser foot.

ALWAYS RAISE the presser foot when threading!!! This releases the tension disks.

Also, when threading through the tension disk, be sure to give the thread an extra little tug to make sure the thread seats firmly in the tension disk. (Grasp the thread just below the thread stand with one hand and then grasp the thread below the tension disk with the other hand and give a little tug--sometimes it will make a little popping noise when it seats.)

Start out with the tensions set at the midway point. From that point, you can test your machine to make sure it is serging properly. Then you can adjust the tensions to suit you or the project you are making.

If the either looper thread breaks or pulls out, remove BOTH looper threads and rethread from the beginning!!! Trying to finagle threading of only one thread will most often result in a machine that will not operate correctly. Just bite the bullet and rethread both threads (in the order specified in the manual).

I seem to have trouble using the tweezers to thread the looper eyes, so I use dental floss threaders instead.
floss threaders Google Search

One more hint: NEVER pull the thread out of the machine by pulling it UP through the machine. This could damage or wear the tension disks. Always clip the threads just below the thread stand, RAISE the presser foot, and then pull the clipped threads DOWN through the looper eyes and needles.

Be sure to clean and oil your serger frequently. This is very important to get the best performance from your machine. Use only fresh oil recommended by the manufacturer and apply only a couple drops each spot.

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Jun 14, 2016 | Sewing Machines

1 Answer

Instructions on changing thread tensions on a Mylock134


Probably the best thing would be to consult the owner's manual.

BEFORE you thread the serger, RAISE the presser foot so the threads will seat properly and the thread will slide easily. Be sure to thread each thread in the proper ORDER! (Usually upper looper is first, lower looper second and the thread tail should always end up laying OVER the top of the upper looper before passing under the presser foot.)

It is also helpful to use different colors of thread so it is easier to tell which thread's tension needs adjustment.

Sergers require varying tension settings depending on the type of stitch and the appearance you prefer. To achieve the standard stitch setting on most sergers, start out with all the thread tension settings at the midway mark between the high and low numbers. Then test and adjust from there.

Verify with the owner's manual that you are threading everything correctly and not missing any steps. If any thread happens to break or come unthreaded, it is usually best to unthread EVERYTHING and start over from the beginning. (Sergers are very finicky, so if you are frustrated trying to get things to work, the last thing you will usually try is unthreading and rethreading from the beginning.)

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Dec 06, 2015 | Sewing Machines

1 Answer

Janome mylock 134d


Hi ,



Make sure your tension is not to tight and that there is now fluff or cotton stuck in between your tension plates. I sometimes use a string of the stitch to pull in between the tension plates. I always set the needles tension first and then i balance the tension of the upper and lower looper.

Make sure the cotton are not looped around a guide. Black cotton and some cottons can build up their own tension. Try different cotton. I\'ve had many a headache with this problem.

Check that the needles are not blunt or bent. I always use schmetz needles. If your needle plate has any damage where the cotton can get hooked. Use a small file or sand paper to remove it. The stitch tongue must be very smooth and the stitch must slide of smoothly. Check that your lower looper point does not have a sharp hook on it. You can use a very fine water sand paper to remove it.

If your needles are touching the looper, i could indicate that your lower looper is out of position. *.*(Always check this with new needles)



Regards

Rob



www.electronicrepairs.co

Dec 30, 2013 | Sewing Machines

1 Answer

Kenmore 385 #3 thread breaks


Try removing thread #3 from the tension altogether. If this doesn't work, then try using a different spool of thread. Some break easier than others. If this doesn't work, try rethreading your serger from the the beginning. Upper looper first, then lower looper, then needle. Test on scraps.

Dec 06, 2013 | White Sewing Speedylock 1600 Mechanical...

1 Answer

I have a singer Overlock 14SH654 and I cannot get the tension set on the upper and lower loopers. The two threads for the needles seem to work find and when adjusted one way or the other shows the change...


Yes, it can. What do you have your differential set at? Try it in the middle and see if it makes a difference.1 is usually for overedging, 2 is usually for easing in a sleeve, etc. I have my tensions set at 4,4,4,4, stitch length at 3 to 4. Do not be afraid to try gradually changing the tensions, but do them one at a time, that is what I did and finally got it.

Mar 14, 2011 | Singer 14SH654

1 Answer

JUKI MO 134 SERGER


How to Thread Juki MO-134 Serger from watching lady at Lyles. Turn upper blade up. Push in first then turn up.It makes threading easier. Blue Thread upper looper first. Pull thread through tension knob. Don'tjust lay it there. (She thought that is what I must have done) Orange Thread lower looper next. Pull thread through tension knob as inthreading upper looper. Adjust lower looper so it is right nextto upper looper so that their points are almost together and directly belowsewing needles. Lower looper will be in front of upper looper (I believe). With tread from upper looper pulledback, slightly lift lower looper above upper looper and thread. I think this isright. Pull thread back with other thread. Tension is the key. Remember that. Yellow: Thread left needle first.Remember tension. Pull thread through curled wire on left side of needle arm. Green: Thread right needle. Rememberabout tension. Pull thread through curled wire on right side of needle arm. b> Note: Before sewing turn the wheel tomake sure the stitches are going together correctly.

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1 Answer

Adjusting lower/upper looper tension


Clean in between you tension plates of your tension units and rethread making sure your cotton runs between the tesion discs.

Jan 19, 2010 | Janome MyLock 634D Mechanical Sewing...

2 Answers

Threading a husqvarna huskylock 1001L serger


Solution taken from "Handbook for Huskylock Sewing Machine Models 1001L/1000L/1000"

1. Raise the presser foot by using presser foot lever. When the presser foot is raised, the two thread tension discs in the thread tension control panel are released so that thread passes freely between them. Otherwise thread tension may not be correct.

Important! When threading the needle, always be sure to lift the presser foot lever, and also take care to thread in the proper order.

Threading order:
1. Upper looper thread (green)
2. Lower looper thread (blue)
3. Double chain stitch looper thread (purple) in case of 5 thread stitch or double chain stitch
4. Right needle thread (red)
5. Left needle thread or double chain needle thread (yellow)

Caution!
Because the left thread tension dial (yellow) is used for either the left needle or the double chain stitch needle, these needles will never be used at the same time.

Upper looper (green) sequence:
1. Thread holder (silver triangle openings attached to thread holder stand)
2. Thread guide (flat silver clips just behind thread tension disc)
3. Thread tension disc (circular knobs with numbers for tension setting)
4. Pull thread around upper looper guide and upper looper
5. Pull thread into hole of upper looper

Lower looper (blue)
Repeat 1, 2, 3.
4. Pull thread around guide (see color coded chart inside front serger cover).

Easy threading mechanism (for lower looper)
1. Pull out the lower looper threading lever
2. Thread the lower looper and position the thread on hook of the lower looper
threading lever.
3. Push the lower looper threading lever back to its basic position while
holding the end of the thread.

Caution:
When returning the lower looper threading lever, always make sure that the two
blue triangle marks (directional arrows) meet each other.

Right needle thread (red)
Left needle thread (yellow)
Important: Thread the needles after threading of lower looper and upper looper.
First raise the presser foot lever, and then thread the needle threads in order shown in color coded thread guide.




Jun 24, 2008 | Sewing Machines

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