How to thread a Janome T 90 D overlocker for the first time.
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If threading the sewing machine does not affect the formation of overlock stitches and the appearance of stitch defects such as gaps, then the opposite can be said about threading the overlock. The fact is that if you skip even one fastening of the thread into the looper, gaps will appear during sewing or an overcast seam will form. So, it is important to pay special attention to filling the overlock.

General scheme for threading an overlocker

The overlock filling scheme has overall structure, which looks like this:

1. Put the spool of thread for work on the spool holder.
2. Pass the end of the thread through the hooks or holes that set the direction of the thread. In order for the stitch to be of good quality, it is important that the spool pin points directly towards the thread guide.
3. Pass the thread through all tension mechanisms: the first overlock mechanism removes the thread, and the next one attracts. That is why it is important to clearly follow the sequence of actions. In some models, these mechanisms are combined, which means that when threading the thread into the overlock, instead of two actions, only one is performed.
4. Thread the thread into the eye of the needle. It must be threaded into the looper so that its direction coincides with the direction of movement of the fabric during operation.
5. Bring the thread under the presser foot - the final stage of threading.

You can check if the thread is correctly threaded by using a test stitch using an unnecessary piece of fabric. If the threads break during operation, it means that a mistake was made somewhere. It is impossible to work with an incorrectly threaded thread, otherwise the mechanism will make the wrong loop, and the fabric processing will turn out to be ugly.

Threading a three-thread overlocker

One of the most common models of the machine is the 51 class overlocker. Many modern models are actually no different from such overlocks, assuming the following threading order:

1. Find the thread guide holes on the body of the overlocker and thread the thread through.
2. The thread must pass through the thread tension plate.
3. When the thread passes through the holes of points 1 and 2, it must be taken down under the needle, pulled out through the foot.
4. For a trial stitch, leave 7 cm of fabric.

Pay attention to the diagram of how to fill a three-thread overlock:

Detailed and visual instructions on how to fill a class 51 overlocker are offered on the video. Following his example, you can refuel other models, since the principle remains the same:

Threading the Right Overlock Looper

The threading feature is that one of the loopers has a tensioner located under the overlock working platform. So, the refueling scheme looks like this:

Threads are wound into all fasteners, and to make it easier to adjust their tension, you can use multi-colored threads. So, it will be easier to determine which thread needs to be loosened and which one to tighten. An example of a threaded right overlock looper is shown in the photo:

Threading the Left Overlock Looper

This procedure can be complicated by the fact that access to the left looper is difficult, so you will have to use tweezers. The filling itself is carried out according to the following scheme:

If threading is not possible due to an inconvenient hole, you can remove the needle plate and then thread all the appropriate fasteners.

The threaded left looper looks like this:

Features of threading the needle thread of a four-thread overlock

Threading a class 51 three-thread overlock does not actually differ from the instructions for threading the thread in modern four-thread machine models. But you should take into account this feature:

• The left needle thread tensioner corresponds to the left needle thread, and the right one corresponds to the right needle thread.
• With regard to looper tensioners, the opposite principle applies: the first right tensioner corresponds to the first left looper, and the first left looper to the first right looper.

Other options are not excluded, so it is important to proceed from the refueling scheme presented on the typewriter:

The four-thread overlock offers a new way of aligning the thread, but it is better to choose threads on tapered bobbins designed for overlockers. A less desirable option is to use threads on small spools, but they should be thin and elastic, without torsion. It is forbidden to use cotton threads, such as "forty" and the like.

A four-thread overlock may have a special automatic system F.A.S.T. for threading the lower looper. In addition, it greatly simplifies threading the upper threads. The model of such a machine can be found in the video, which also shows the refueling scheme:

Chinese overlock: refuel correctly

Owners of a Chinese overlock often face the problem that the instructions for the device are unreadable or simply too complicated. Despite the fact that there are schemes, it is not always possible to decipher it without text. In this case, step by step instructions will come to the rescue:

1. The threading process should start from the left looper. The thread is threaded into the hole of the protective cover through the thread guide, guided and threaded into the hole of the left valve cover.
2. Next, the thread must pass through the holes in the thread tension plate. The thread must be drawn around the mechanism that regulates the tension, and through the channel that gives way to the looper mechanism.
3. It is necessary to rotate the pulley until the right looper rises up above the plate with the needle.
4. After that, the thread is looped behind the lever on which the right looper is located, it is fixed to the hook.
5. Now you need to rotate the pulley again so that the left looper takes its extreme position. The thread is passed through the looper hole, then the pulley rotates again until the right looper rises above the needle plate and brings the left looper up. When the left looper is at the top, the thread can be threaded under the shoulder blade. An incorrectly threaded thread will break during operation.
6. Threading of the right looper starts. The thread is guided through the hole in the needle thread tension plate. Next, the thread passes through the hole in the upper knife limit plate, which is located in the thread tension mechanism of the right looper.
7. The pulley is rotated so that the right looper rises. The thread is threaded into its hole, under the hook, where the direction of the thread is set.
8. The last step is the threading of the needle thread. It is passed through a mechanism that regulates the tension, then passes through the hole in the plate, bending around the axis of the regulator.
9. The thread passes under the hook, then is threaded into the eye of the needle.

Step-by-step instruction Refueling of the Chinese model is shown in the video:

The key to successful work on the overlocker is the correct threading of threads into it. Therefore, before starting work, do not be lazy to carefully study the instructions on how to do this. Filling diagrams are often depicted inside the part of the cap that is removed. Also, for a simpler understanding, those areas into which the threads are threaded are indicated different colors. Neglecting simple rules can take not only time, but also ruin a fabric product.

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We bring to your attention a master class on setting up a 4-/3-/2-thread overlocker Janome MyLock 944D.

4/3/2-thread overlock Janome MyLock 944D performs 14 types of seams.

Consider in detail the implementation of each seam.

4-thread bartack stitch.

We use two needles. The threading sequence is shown on the machine panel. Switch the lower looper tension lever (standard/rolled stitches) to standard STD. stitches, leave the switch 3, 4 and 2 of the thread stitches in the upper position 34. Set the spreader position to standard stitches S.

• Stitch length S - 3
• Differential DF-1
• Thread tension: 3 3 3 3

The overlock has a lower looper threading assistant. Raising the assistant up, he brings out an additional hook, thanks to which the thread is threaded.

Knitted stretch

2 needles involved. The dressing is the same as for the 4-thread bartack stitch.

Stretch knit uses differential feed and stitch length settings to prevent the knit from stretching while sewing.

This seam is used for sewing an elastic band to the neck, cuffs, sewing a sweater.

• Stitch length S - 3
• Differential DF-2
• Thread tension: 3 3 3 3

3-thread wide stitch

We use only the left needle.

• Stitch length S - 2.5
• Differential DF-1
• Thread tension: 3 -- 3 3

3-thread narrow stitch

• Stitch length S - 2.5
• Differential DF-1
• Thread tension: -- 3 3 3

3-thread super elastic

We use two needles + a convector. Therefore, the upper looper is not refueling.

Place the convector in the upper looper holder and insert the convector hook into the looper hole.

Use only the right needle.

• Stitch length S - 2
• Differential DF - 1.5
• Thread tension: 3 2 -- 3

Flat 3 thread wide

We use only the left needle.

Loosen the lower looper tension. Two fabrics folded on the wrong side are processed together, then unfolded. This seam is done with a knife.

• Stitch length S - 2
• Differential DF-1
• Thread tension: 1 - 3 5

Flat 3-thread narrow

We use only the right needle. Two fabrics folded on the wrong side are processed together, then unfolded. Flat seams are used as a decorative finish.

• Stitch length S - 2
• Differential DF-1
• Thread tension: -- 0.5 4 4

Flat 2-thread wide

When sewing with 2 threads, use one needle thread and lower looper thread.

Install the convector on the upper looper, and insert the converter hook into the looper hole. To change to 2 thread stitches, turn the thread tension switch down to 2.

We use only the left needle. Two fabrics folded on the wrong side are processed together, then unfolded.

• Stitch length S - 2
• Differential DF-2
• Thread tension: 2 -- -- 4

Flat 2-thread narrow

Install the convector on the upper looper, and insert the converter hook into the looper hole. To change to 2 thread stitches, slide the thread tension switch down.

We use only the right needle. Two fabrics folded on the wrong side are processed together, then unfolded.

• Stitch length S - 2
• Differential DF-2
• Thread tension: -- 1 - 4

2-thread wide

We use only the left needle.

When working with 2 threads, use one needle thread and a lower looper thread.

Install the convector on the upper looper, and insert the convector hook into the looper hole. To change to 2 thread stitches, slide the thread tension switch down.

• Stitch length S - 2.5
• Differential DF-1
• Thread tension: 3 -- -- 5

2-thread narrow

We use only the right needle. When working with 2 threads, use one needle thread and a lower looper thread.

Install the convector on the upper looper, and insert the tip of the convector into the hole of the looper. To change to 2 thread stitches, slide the thread tension switch down.

• Stitch length S - 2.5
• Differential DF-1
• Thread tension: -- 3 - 5

3-Thread Rolled Stitch

We use only the right needle. To perform rolled seams, it is necessary to transfer the spreader to rolled seams - the value R. To do this, first lower the upper knife, move the spreader and raise the knife to work again.

The Janome MyLock 944D overlocker has a removable sleeve for processing small items in a circle (sleeves, children's clothing). Remove detachable sleeve.

At the same time, turn the handwheel and turn the upper cutter off control to the left.

Press the cutting width adjuster and move the spreader to position R. Return the knife to its original position.

Position the lower looper tension switch at the top 3/4 of the thread.

• Stitch length S - R
• Differential DF-1
• Expander - R
• Thread tension: -- 3 3 5

3-thread hem

Use only the right needle.

• Stitch length S - 1
• Differential DF-1
• Switch from standard seams to roller seams - R. H.
• Expander - R
• Thread tension: -- 3 5 3

2-Thread Rolled Stitch

Use only the right needle. A convector is put on the upper looper. To perform roller seams, it is necessary to transfer the spreader to roller seams - R.

To do this, first you need to lower the upper knife, move the spreader and raise the knife to work again.

Place the lower looper tension switch at the bottom of the 2nd thread stitch.

Switch from standard seams to roller seams – R.H.

• Stitch length S - R
• Differential DF –0.5
• Switch from standard seams to roller seams - R. H.
• Expander - R
• Thread tension: -- 3 - 7

The kit comes with a waste bin and a box for accessories.

The question about the difficulty of refueling was in this thread:

For those who are not instructed like me, I took a picture of this "thing" (I did find it), that is, a lever that pushes the hooks to the right so that you can easily thread the "green" looper thread.
To thread the looper thread marked in green, you need to open the overlock completely. On the left side, find the lever (it is marked with a yellow arrow), and press this lever. At the same time, on the right side, the hooks we need will move forward and all holes / hooks will be available for refueling:

Let's get this look. Filling points are marked with yellow dots:

Now let's return the lever to its original position. Hooks removed:

Phew .., you can breathe a sigh of relief :) Of course, this is not a gas station, but it has become much more pleasant to fill the overlocker.

P.S. It’s a pity that in the Sezon store on Avtozavodskaya, when buying an overlock, they didn’t show me this trick :(

Listen, in the photo it seems that the other looper's thread got caught in the wrong place :) Do not pay attention, look at the "green", this thread is important to us.

The Janome ArtStyle 4057 overlocker is one of Janome's simple, inexpensive and popular overlocker models. It cannot be said that this is the best Janome overlock, there are overlock models that perform not only 3, 4-thread stitches, but also two-thread ones. There are models that can simulate a flat seam, etc.

But the Janome ArtStyle 4057 overlock differs from others, first of all, in its simple design, convenient access to the loopers. This parameter is noticed only during threading, especially in the left looper. Well, as has already been noted, the price of the Janome ArtStyle 4057 overlocker is quite low compared to other models not only from Janome but also from other manufacturers of sewing machines: Brother, Merrylock, Jaguar, etc.

This article is from the "reviews and instructions" series and it will be most useful for those who decide which overlock to buy.

Video how the modern four-thread overlock Janome ArtStyle 4057 works.

The main difference between the overlock Overlock Janome ArtStyle 4057

Modern overlockers are not much different from each other, not only externally, but also functionally. All of them perfectly overcast any fabrics, including "capricious" ones. All of them have a differential rail and the ability to perform at least two types of seam: 3-thread and 4-thread. Of course, each overlock model has its own characteristics, but in general they are quite similar.

But what distinguishes the Janome ArtStyle 4057 overlock from other Janome overlock models is the presence of a left hinged cover (part of the table). This is an obsolete design element and is used to gain access to the left looper during threading.
Modern overlock models have automatic threading in the loopers. But if you are a rather conservative person and still use a push-button phone instead of a touchscreen smartphone, then this overlock model will suit you perfectly, and besides, its price will definitely push you to buy.

Overlock Threading Janome ArtStyle 4057

The convenience of threading is one of the parameters by which you need to choose an overlocker. But it is he who is least often paid attention to when buying. Take your spools of thread with you and try threading right in the store. If you do not have any difficulties, then in the future you will save a lot of time.

For small spools, the cone bushings can be removed and are used when large cone spools are installed on the creel.

Colored markers along the thread path will help you properly thread each thread.
Also note how to thread these thread guides. This is done in order to extinguish the torsion of the thread.
For especially "heavy" cases, it is even recommended to put a special springy mesh on the coil. Sometimes it is attached to the overlock kit.

It is quite easy to pass the threads between the plates of the disc tensioners. By the way, tensioners of just such a design are considered the most convenient and modern.

A color-coded threading chart will help you figure out where to thread, even if you're doing it for the first time. The sticker is located on the hinged cover of the looper compartment.

And in this diagram it is easy to figure out how to adjust the tension of each of the threads of a 4-thread overlock stitch. You can even thread different colors first, adjust the tension of each thread, and then remove them and put threads of the same color. By the way, when changing the thread in the overlock loopers, they do not change them, but simply stretch them out, having previously tied the old and new thread with a reliable knot.

Video on how to thread a Janome overlocker.

If the red lever is moved from position (S) to position (R), then the overlock will perform the so-called rolled seam or narrow seam. This seam is often used for edging the bottom of a knitted skirt, edging tulle, etc.

Other features of the overlocker Janome ArtStyle 4057

The overlock stitch width can be reduced or increased. Do not confuse with stitch length, we will talk about this a little later. This is done by shifting the knife, which, by the way, can be turned off. Well, how to do it, you yourself will read in the instructions.
I will only note that the Janome ArtStyle 4057 overlock knife has a new design, as well as other modern Janome overlock models. Both of its parts are at the level of the needle plate. This not only reduces the possibility of injury, but also increases the working space for overcast fabrics.

Various additional paws are designed for this overlock model. Of course, there are not so many of them as for conventional machines, but, nevertheless, they greatly increase the possibilities of overlock.
Appointment of Janome sewing feet.

To change the foot, you do not need to unscrew anything, just press the lever behind the foot and the sole of the foot will detach. Install a new sole under the foot and lower the fasteners, you will hear a click, which means that the foot has joined.

By the way, this photo clearly shows the overlock knife.

Another feature is needles. Needles can be installed only those recommended by the manufacturer. Otherwise, malfunctions may occur in the overlock: gaps, loops, etc.

The stitch length is adjusted with the top knob. The lower handle is designed to adjust the differential of the rack (comb with teeth), which moves the fabric.

If the stitch length does not require comments, then the differential often causes misunderstanding. The easiest way to explain it is this. Knitted fabric can be sewn in two ways, in the first case, you will stretch it with your hands, and in the second, on the contrary, put it under the foot with an awl or fingernail. This is how the differential type rake of modern overlocks works. This allows you to make strong and elastic overcasting seams that do not tear when stretched.

Flywheel overlocker Janome ArtStyle 4057 rotates on itself

The overlock flywheel Janome ArtStyle 4057 rotates on itself. Pay attention to this immediately when buying an overlocker. If you turn the wheel backwards (away from you) by hand, you can tangle the looper threads and needles.

Video how to lubricate a modern overlock.

Video on how to replace and properly tighten the overlock belt.

If you need a versatile sewing machine that can not only sew, but also overcast fabrics, then read this article. It will focus on just such a machine, called a carpet. The carpet lock is capable of not only overcasting, like an overlock, but also performing a number of other operations.