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Serger needles hitting lower looper - Viking serger 1005LCD

After a needle break and a thread jam (knotted up in a wad under the pressure foot), the needles now clear the lower looper on the down swing, but both needles hit the lower looper on the upswing, and a stitch will not form. On the up swing, the pressure PLATE is lifted a bit, too!!

I must have pulled excessively to clear the fabric from the machine, pulling straight back and turning the wheel back and forth to release the fabric.

I cleaned out the mess, vacuumed it and put in new needles, rethreading everything. I can SEE the needles straddle the looper thread, and then catch on it so hard it almost cuts the thread from the needles.

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  • summer dawn
    summer dawn Apr 13, 2009

    I am having the same issue with my SHARK EURO-PRO serger model: 101-548. Everything u have described here is exactly what I am seeing on my serger. Please help it costs so much to service and times are hard!



    Thank you....

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6 Suggested Answers

  • 201 Answers

SOURCE: Free Motion Sewing - Jams

I don't have a solution, but wanted to remind users of this machine that it does not do the proper free motion action until you reach a certain speed. This information is on page 26 of my manual (older machine, so page no. might have changed with newer manuals). You can stitch at the lower speeds, but it does not "hover" and allow you to move the project swiftly and smoothly.
If you can sew regular sewing without thread/bobbin issues, then it is probably something to do with how you have set/threaded/used the free motion to cause the stoppage. Make sure you have a sharp (i.e. new) needle of the correct size for your thread, that the bobbin thread is the same weight thread as the top thread. Turn on the Needle Down button. There is a Free Motion setting in the Set menu, but I have no idea what it does. I turn it on anyway, just in case! What foot are you using? If you don't have one of the free motion feet (there are quite a few to choose from!) use the embroidery foot (small clear plastic one).
Pam

Posted on Apr 15, 2008

akylas
  • 26 Answers

SOURCE: thread wont overlock

When the thread breaks too often, try these, that goes for all sewing machines
1. Replace the needles,
2. Loosen slightly the tension of the needle threads.
3. The top threads are to thin,
4.The sewing (rotary) hook or looper, has burs,
5. Wrong threading

Posted on May 28, 2008

kent581
  • 87 Answers

SOURCE: Viking Lily - free motion quilting - thread loops on underside.

I need more info.
>Where is your presser fooot pressure set(1-9) it should be around 4?
>How fast are you free motioning (faster is better? from 1-10 10 being full speed.
>Is your bobbin threaded correctly (I need to cover the basics.)?
>Never never use a needle smaller than a 90/14 for free motion (I know everyone's an expert...but trust me)
After all this, it's OK to tighten your tension up on top a little when free motioning and getting eyelashes/spider webs on bottom. around 6 should do it though.

Posted on Mar 19, 2009

  • 2 Answers

SOURCE: my viking serger 905 wont cut

Sometimes the blades need to be adjusted. Lower them all the way manually to the bottom. The cutters if you look on the side should meet. If they don't' meet or if there is a small space then the upper cutter needs to be lowered.
There are screws that hold this in place. You might need a man to help since the screws on my machine are very tight!

Posted on Apr 10, 2009

  • 371 Answers

SOURCE: husqvarna viking, interlude 435...unable to solve tension problem

Sounds like the tension unit is at fault. First check the bobbin tension by removing the bobbin case. Use a half-full to 3/4 full bobbin. Be sure it is threaded through the bobbin case with thread hanging straight down with tension spring on top. Tie the stitch plate to the end of the thread. If the thread pulls the bobbin out, the bobbin tension is too loose. If it does not move when "jiggling" the bobbin, it is too tight (which is not likely based on your description). Small screw (through an open hole) on the side of the bobbin case adjusts the tension of the bobbin case. Left for loose and Right for tighter. Otherwise, contact local authorized Husqvarna Viking dealer for their assistance. You can find the closest dealer at the Husqvarna Viking website - http://www.husqvarnaviking.com/us Good luck.

Posted on Sep 24, 2009

  • 152 Answers

SOURCE: Sewing thick fabric and machine won't send it through

Sergers are not really meant to sew very thick material. The blades have a maximum amount of range, or thickness that they can reach to cut. If you go outside that range, get ready for a big repair bill! You can break loopers and even the needle plate when you "push" a serger. My advise would be to use you sewing machine for the, "pounding" work. The type of material matters too, A thick Quilt like fabric can be sewn becatuse it's not dense material. A thinner harder denim could max out at 3 layers because of it"s hard finish. If the fabric you're sewing isn't dense like, you could just need new knives.

Posted on Oct 14, 2009

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Bernina 335 serger won't sew/overlock. carefully rethreaded the serger but that hasn't helped.


The 335 has a two thread chain stitch (stitch type 401), and the overlock side (right needle side), is a three thread plain overlock. If you are describing the plain overlock as the problem, I would first suggest the following in re-threading:

1. Thread the upper looper
2. Thread the lower looper
3. Thread the needle last (important)

If the needle threaded, you cannot re-thread the lower looper without breaking the thread.
In order to thread the lower looper, the lower looper must pass by the needle thus picking up the needle thread. So, instead of threading the lower looper thread underneath the needle thread, the looper would be threaded on top and cannot sew without breaking the thread.
Make sure that the threads are bedded between the tension disks. Check this by stretching the thread fore and aft of the tension disks as well as visually noting that the threads are not accidentally threaded behind the disks. You can also loosen the tension disks when threading so as to allow the threads to bed deeply between the disks.
Please reply with your observations.

Sep 27, 2015 | Bernina Sewing Machines

1 Answer

Why won't my sl370 work?


Hello Mary.
By the question, it looks like the lower looper is making loops? If so, check that you are using the correct needles for your serger and that the needle or needles is/are inserted correctly:
- needles must be all the way up into the needle shaft
- needles must face with the flat side to the back and the groove to the front
- use at least needle size 12/80, not smaller

Check these few items, if the loops are still not forming:
- re-thread the serger from the start, keeping in mind to thread in the proper sequence (upper looper, lower looper, needles)
- make sure that the lower looper thread lays on top of the upper looper thread and is passed to the back of the serger and then under the presser foot when threading
- make sure that the thread are securely engaged IN the tension assembly
- make sure that the serger is set for 3-thread or 4-thread overlock (i.e. that the upper looper converter is not engaged)
- check all tension setting
- stitch length should be around 2.5 - 3.5

Let me know how it goes.
Happy serging!

May 02, 2015 | Sewing Machines

1 Answer

WHy is my Husqvarna Viking 560 serger is skipping stitches????


Here are a few things to try.
1. Make sure that correct type of needles are being used, both are the same size, and that the needle size matches the fabric weight. This is the first serger to use 15X1 needles.
2. Make sure that the needles are installed correctly and are pushed all the way up. Have you replaced the old needles with new ones, not other used ones?
3. Thread has a shelf life, it can expire over-night. Just to eliminate this possibility, replace all threads with fresh good quality serging thread (and not just another spool which was purchased some time ago).
4 It sounds like you have re-threaded the serger correctly according to manual instructions. Here is a sure fire method:
- thread the upper looper and place the thread behind the needles under the presser foot. Make sure that the thread is lying firmly between the tension discs.
- thread the lower looper (the tricky one). Check that the thread is between the tension discs as before and place the thread over the upper looper and then behind the needles, and under the presser foot.
- thread the needles, checking that the thread is between the corresponding tension discs. Place the thread under the presser foot.
5. Check stitch length.
6. Check if the problem persists with other fabric types, use two layers. If the problem occurs with only a particular fabric, then the cause is incorrect needles.
7. Check tips on both upper and lower loopers. They should be free of burs, smooth, and have a semi-sharp point.
Hopefully this will solve your problem, if not it may be time to have it inspected by a qualified technician.
Please rate how effective were these suggestion in solving your problem, it is important to me.

May 13, 2014 | Brother XL-2610

1 Answer

My Janome 204d Serger won't form a chain stitch. It is threaded correctly. I have changed the needles??


I would suggest that you check the needles again, make sure they are both fully up into the needle housing. Also they should be at different heights in order to form the stitch sequence.

It is important that you thread the loopers first in the sequence shown in your manual, then the needles. So you may need to recheck the threading again and make sure the threads are in all the eyes correctly, especially the lower looper. Also some overlockers, have a sliding eye on the lower looper for ease of threading, if yours does, make sure it has been slid back to normal operating position.

When you have checked the threading up, take all four threads under the raised pressure foot and make sure that the upper looper thread and lower looper threads are not crossing over each other. Lower the pressure foot and try to chain off again.
I hope this helps you to resolve the issue.

Oct 11, 2011 | Janome MyLock 634D Mechanical Sewing...

1 Answer

My serger doesnt make any stitches at all. I have been going through this book for 3 years and I cant get it to work


Has it ever chained off since you bought it? If you purchased it second hand it is possible that the timing of the loopers is out and this will prevent a chain from forming.

However, I'll go through general overlocker/serger troubleshooting for threading up. The critical things are to thread it exactly as the diagram shows, some sergers have a diagram inside the front looper cover so its easy to refer to when you are working on the machine. Or use the manual diagram. There is a sequence you need to follow in threading up, usually upper looper, lower looper, then the needles. This is important. Then you pull all four threads under the raised pressure foot, lower the pressure foot, and start to stitch and hopefully a chain forms. If you need to change a thread you can knot on a new colour, turn the tension to zero, then pull through the new thread. Pull the knot right through the looper eyes but you will need to cut the knot out and thread the needles with the new colour once you get there. Then turn tension back to the normal setting (5 usually) and again pull all threads under the foot.

The timing of the two loopers to the needles is critical to a stitch forming though so if you have tried everything and aren't getting a result; then perhaps its time to take it to a service centre, get it checked out and if it works fine for them, ask for a quick demo of threading up, then do it yourself with the demonstrator watching.

Overlockers are very different to sewing machines and there is a learning curve but once mastered, they are so quick and give a great finish.

Oct 08, 2011 | Singer 14SH654

2 Answers

How do you lengthen stitch. The stitches are so close together it looks like a satin stitch. I have no manual for it. thanks!


your machine should have a stitch length dial on the right hand side above the flywheel, it might have numbers from 0.5 to 3 or 4, higher number for longer stitch (effectively this moves the foot and feed dogs faster in relation to the needles to make the stitch longer).

If you have the Serge Pro SW432 that your enquiry is linked to and you have not used a serger before, then definitely get hold of the manual, you will need it. Sergers are very different to sewing machines - once you've mastered one, its easy, but there is a learning curve.

Firstly, ALWAYS extend the thread aerial up, you'll see loads of images of sergers sitting nicely with the aerial in the lowered position, great for moving them to avoid damage. But they won't work well, a serger seams at 1500 stitches per minute and the thread streams off the cones so you need to ensure there is a good clear feed via the aerial to the tension dials.

Buy good quality thread cones and keep it out of the sun and dust. Cover your machine when not in use (lower the aerial first). You could start with white, grey and black thread as this will cover a lot of fabric prints/colours etc. To change thread colour, you will need to cut and knot on the new thread for the two loopers (right hand side cones) - do this about 6 inches above the first thread guide, and then chain off to feed these through down to the needle plate, when you see the new colour come through okay, stop. Repeat the process for the needle thread or threads (3 or 4 thead depending on what stitch you are sewing) but stop chaining when the thread knot is above the needles. Stop, loosen these tension dials and pull the thread down, cut out the knot with scissors and thread the new colour through the two needles. Use threading wires if you have them, or tweezers. Pull both these and the two looper threads together under the pressure foot, lower the foot, turn your tension dials back to 5 and chain off. The thread sequence is important, mostly top looper, bottom looper, then needles, this is so much easier demonstrated than explained.

If you can find a classroom/shop offering overlocking user lessons, go take a couple, its well worth the money. Otherwise go to you-tube and watch all the videos you can search on sergers, threading, etc.

Good luck with your serger, please respond with 4 thumbs if this has been helpful to you. :-)

May 19, 2011 | Simplicity Serge Pro SW432 Mechanical...

1 Answer

My thread keeps breaking on my Bernina 800dl serger


Is the thread aerial raised up ensuring a good thread flow?

Which thread is breaking, needle or looper? If you can establish which thread is breaking, then check that tension dial, turn it to zero and clean between the tension discs by sawing a selvage edge of cotton fabric offcut between the two discs to remove any fibres, dirt or debris.

Now turn all dials to zero, unthread the needles, and pull on each thread, feeling if there is any resistance. If there is, check back through the thread path and find where the thread is catching.
Serger threads flow very fast and the thread path can't be compromised or the thread snagged.

Check the thread path from the cone to the sewing foot, and ensure that the thread is not catching on something, or getting caught around the cone, cone holder or aerial somewhere in the path. Look at the thread cone, has the thread feeding off got looped around itself somewhere? Open up front of the serger and look at the thread going through the loopers, is something misthreaded here, sometimes there is a part that slides on a looper to make threading easier, just check it is all threaded up correctly. There should be a threading diagram inside the serger cover usually showing the paths.

Rethread the needle(s) and pull all the threads under the pressure foot, lower the foot, turn tensions back to 5, then chain off and test sew.

If no joy after trying all this, I'd take it for a ride in the car to the shop.


Apr 14, 2011 | Bernina 1008

1 Answer

Threading rl-635 serger--wife is trying to tread this machine and the lower something or other doesn't work. Cannot find a manual, and the tape they sent with the machine is all messed up.


Sergers can be a bear! One miscue and - well you know. My old serger was threatened more than once.

Are the instructions for this model printed on the inside of the door or on the machine?

Note every guide and make sure none are missed.

Raise the thread antenna to it's highest position.

Raise the presser foot and turn the tensions to zero.

Start threading with the upper looper, making sure the loopers are not crossed.

The upper looper is the one that appears to be taking the thread toward the needles.

Make sure the threads do not cross as you then thread the lower looper (this one appears to be taking the thread away from the needles).

Lastly - thread the needles; right needle first.

Take the ends of the thread under the presser foot and toward the left side of the presser foot.

Lower the presser foot and set the tensions back to 3 - 6.

Stitch a chain of thread before stitching fabric.

If this works, and I sincerely hope it does, never let the serger run out of thread.

Snip the thread near the cone and tie off snugly with the new thread.

Lift the presser foot and open the tensions and stitch or gently pull the thread toward the back of the serger. The knots should clear all but the eye of the needles - stop, cut before the knot reaches the eyes

Feb 22, 2010 | Riccar Sewing Machines

1 Answer

I have a acme serger 5, brand new. We have threaded it according to the cd, I even had my son do it also, but the one of the bottom loopers thread keep breaking. I bought serger interlock thread. It will...


I will make this easy first always thread the machine upper looper then lower looper then the needles if a thread breaks especially if it was one of the loopers, make sure to pull the needle thread out before hand then rethread. as for the breakages look to see if the loopers are hitting each other when they cross and see if the needles are hitting the loopers when they go together either of these things will cause problems if so it will need to be looked at by a tech

Oct 20, 2009 | Sewing Machines

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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