Do-it-yourself pfaff sewing machine repair

Moscow and Moscow region

Repair of PFAFF sewing machines in Moscow at competitive prices at the customer's home.
We guarantee our work for up to 6 months.
Experience over 15 years.
We guarantee professionalism and quality repairs because, unlike many service centers that repair various household appliances, we only repair PFAFF sewing machines, as well as other brands of sewing machines.
PFAFF sewing machines are quality and reliability from a German manufacturer with a history of more than 150 years. In 2000, PFAFF was bought out by rival Husqvarna, and in 2006 PFAFF, together with Singer, are part of the SVP Worldwide group of companies. Of course, the long history that turned PFAFF sewing machines into one of the best on the market was due to the complexity of the design and the presence of complex electronic filling, not even in the top models. Therefore, the adjustment and repair of PFAFF sewing machines should only be carried out by professionally trained specialists. Any independent intervention in the internal components of PFAFF sewing machines in most cases leads to even greater problems.

The masters of our service adjust, prevent and repair PFAFF sewing machines of the following main classes (directions):

Adjustment, prevention and repair of PFAFF electromechanical sewing machines

This group of sewing machines has limited functionality, which is expressed in a small number of operations, ease of operation and inexpensive service. The internal components of these sewing machines consist of mechanical catches, and only a motor, a light bulb for illuminating the working area and a pedal for controlling the speed of the motor from the electronic filling. In more expensive versions of this class of sewing machines, there may be a control board for a constant, stable motor speed, which will not change depending on the “severity” of sewing.

Sewing machines do not lose their popularity even in the twenty-first century. Those who were born in the Soviet era remember that girls were taught from childhood to sew various things, from gloves to jackets and coats.

During the Soviet era, most people did sewing machine repairs themselves. Even today, those who attend sewing courses understand that it is better to repair a sewing machine on their own than to take it to a service center:

• Firstly, companies that repair sewing machines require quite a lot of money from their customers for the services they provide.
• Secondly, even modern machines can be sorted out in a matter of hours, you just need to carefully approach this issue, and in the future this will allow you to repair sewing machines without involving third parties.

Let's look at the basic rules for operating sewing machines:

• Sewing equipment should not be located near batteries and heaters. But at the same time, it should be in a dry room, in which there are no signs of dampness;
• Before starting work, it is necessary to select the necessary materials and tools, needles and threads that will be needed in the process of work;
• Before you start sewing, you need to make sure that the needle and thread guide are in the up position;
• Remember that the sewing machine needs to be helped at the moment of sewing, pulling the matter towards itself;
• After the sewing work is finished, raise the presser foot and pull out the fabric.Next, cut the thread, finding a free end in it in advance, the length of which will be equal to a maximum of seven, but a minimum of five centimeters.

There are rules and they must be followed. The use of quality materials and additional tools minimizes the occurrence of problems and malfunctions when working with sewing machines. Therefore, the following causes of malfunctions are the most common:

1. Thread break. A break can occur in both the upper and lower threads. In the first case, the problem is related to the selection of low-quality threads or the wrong size of the needle. In the second case, the problem of a sewing machine malfunction may be due to irregularities, the presence of burrs on the bobbins, and improper thread winding.
2. Problems with tissue advancement. If such a problem occurs, you need to carefully look at the position of the teeth. If they are pulled up or lowered to the bottom, then you need to bring them back to normal;
3. Cutting through fabric. If such a problem occurs, in order to fix the machine, we need to reduce the pressure of the presser foot, and check the condition of the needle, it may be too blunt.

The above problems are not serious, and are fixed in a matter of minutes. But there are some types of problems that occur infrequently. Therefore, repairing sewing machines with your own hands, if they occur, will take a lot of time.

The most difficult, most serious breakdown should be considered the appearance of a knock during the operation of the sewing machine. To solve this problem, it is necessary to pull the flywheel several times, and do it in accordance with the axial direction of the machine.

In order to repair the sewing machine, it must be disassembled. We disassemble the sewing machine in the following sequence:

1. Remove RP (manual drive). It is necessary to remember its location, this will subsequently allow you to assemble a sewing machine in a short period of time;
2. Unscrew the limiter from the nut, which is a classic screw. It is under a manual drive, at the time of assembly it must be screwed back to its original location;
3. Remove flywheel. This must be done carefully, avoiding damage to it, in the event of a flywheel malfunction after assembling the machine, you need to see if everything is in order with it;
4. Remove the bobbin that looks like a cone. It is located below, after the flywheel. It will not be difficult to find her;
5. Remove the bushing from the shaft base;
6. Put a tin washer on the shaft. You can make such a washer very simply, just cut the bottom of the tin can.

The washer in 40% of cases is the key to high-quality work using a sewing machine. Sometimes adding it to the machine is enough to solve the problem, but this does not always happen. When the sewing machines are being adjusted, in 60-70% of cases it is necessary to turn the rail 180 degrees.

Needles are the basic elements that make a sewing machine work. From what needle will be chosen, its further work depends. If a defective needle is selected, then the occurrence of the above problems is not a rare case, because the needle is the basis, and without it it is impossible to sew a single thing.

Therefore, when choosing a needle, you must carefully consider its size and thickness. You also need to check the numbering of the needle if any complicated sewing work is being done, otherwise it may happen that the thing will not turn out the way you imagined it before.

There is another problem in which the wrong choice of needle can lead to stretching and tissue damage. If the needle is too thick and the fabric is thin, then you cannot use the needle with such a fabric, otherwise it will break.

Using too thick fabric with a small needle size may cause the needle to break. In order to sew something from a compacted fabric, you need to choose a thicker needle, if it is not available at home, then go to the store and purchase it.Before that, measure the thickness of the fabric in advance - this will allow you to pick up a needle in the store in a shorter time, you will need to tell the seller the thickness of the fabric, and he will independently select the needle of the size you need for you.

Difficult repair of sewing machines associated with the adjustment of components and mechanisms can only be performed by an experienced craftsman. But such repairs are rarely made, only when a part breaks down at the sewing machine and it needs to be replaced with subsequent adjustment.
Most often, the sewing machine begins to “be capricious” if the rules for its operation specified in the instructions are violated or if simple settings and adjustments are not observed.

The main reason leading to the failure of the sewing machine is sewing fabrics that are not intended for this model of the sewing machine. Hemming the double hem of jeans, changing the zipper in a leather jacket or bag, etc. - this is the main reason for the appearance of gaps in the stitch, thread breakage, needle breakage. Sometimes this can even lead to a breakdown of the sewing machine, followed by complex repairs associated with the replacement of parts.

This article provides basic recommendations on how to set up and perform a simple DIY sewing machine repair.

Oddly enough, but it is the needle that is the most important part of the machine. During its “life” it makes thousands of tissue punctures and is not always light and thin, so sooner or later the point of the needle becomes dull, and the needle itself bends. And if at least once the needle “hits” the metal part of the body of the machine, then the tip will bend in the literal and figurative sense of the word.
However, are we paying attention to it? The needle seems to be intact, so everything is fine. But take a magnifying glass and look at its point, its blade will be bent to one side. How will such a point pierce the fabric? The only way is to break through it.

Now let's see how such a needle will form a stitch.
The thread passing in the eye of the needle will cling to the curved point, and “slow down”, forming an excess of the upper thread in the stitch. Here is the first reason for the appearance of loops in the line. Moreover, a bent point will cause the thread to break periodically, especially in difficult areas for sewing, when the upper thread is stretched to the limit.

It turns out that sometimes the whole repair of a sewing machine consists only in replacing the needle.
Treat the needle with great care. Even if it outwardly does not have blade defects and is not bent, try to change them more often anyway.
There is no need to throw away used needles, as there are situations when needles break one after another, for example, when sewing a leather bag. That's when you remember about the jar of old needles.

Another reason for setting up a sewing machine, especially old manual machines such as Singer or Podolsk, is the incorrect installation of the needle in the needle bar. The blade of the needle (Fig. B) should be on the side of the nose of the shuttle. Remove the needle plate and see if this is the case if the machine suddenly began to loop and tear the thread.

It often happens that a seamstress installs a needle from an industrial sewing machine into a household sewing machine. It is impossible to confuse a household needle with an industrial needle. The household needle has a special saw cut on the flask (Fig. B). But, nevertheless, it is precisely the industrial types of needles that are installed. This absolutely should not be done. Firstly, you violate the gap between the shuttle nose and the needle blade, hence the gaps in the stitches, and secondly, you risk damaging the sewing machine shuttle. Some industrial needles are noticeably longer than household needles and can touch the surface of the hook, scratch it, and even damage the hook.

Figure (A) shows a diagram of how to check the curvature of the needle. Externally, the needle cannot be determined whether it is curved or not, and if you put it on the glass (2), you can easily check the gap (1). Please note that an uneven, bent needle will cause gaps in the stitching and will break sooner or later.

In order for the sewing machine to work “more confidently” with fabrics that are difficult to sew, such as knitwear, stretch, thin natural and artificial leather, denim, needles are produced that are designed for sewing just such fabrics and materials. They have a special point shape and facilitate the passage of the thread in the fabric, almost eliminating gaps in the stitch and looping of the upper thread.
See Home sewing machine needles.

Thread looping in the line, as well as a characteristic knock during their work, is perhaps the main difference between zigzag sewing machines, such as Chaika, Podolskaya 142 of all models. In short, looping in the line occurs due to uneven thread tension along its path: a broken compensation spring, a rusty sole of the foot, the shuttle stroke is incorrectly set, etc. However, it is impossible to set many parameters on your own without experience. Therefore, if you have a poor-quality stitch, pay attention, first of all, to the condition of the needle, the tension of the lower thread in the bobbin case and whether the upper thread tensioner is working correctly. Very often, children love to disassemble and assemble it, and after such a repair, the machine stops working.

It is sometimes necessary to repair the Chaika sewing machine quite often, and this is not due to the breakdown of parts, the parts are just very strong, but with the misalignment of the interaction of some units of the sewing machine, mainly the shuttle.
Almost all of these tips for repairing a Chaika sewing machine can be used for other models of household machines.

First of all, check the nose of the shuttle with a magnifying glass, it should not have nicks, rusty spots. If there are notches, they must be removed with a fine file and polished to a shine, otherwise the thread will constantly linger behind the traces of the file, and loops will appear from below. Just do it carefully so as not to blunt the tip of the nose of the shuttle.

Sometimes the bobbin (the lower thread is wound around it) can be the reason for repairing the sewing machine. Yes, it is repair, since an inexperienced “master” often disassembles and assembles all the nodes, when it is enough to simply replace the old metal bobbin with a new plastic one. If the edges of the metal bobbin are notched, and the bobbin case itself is clogged with thread lint, the lower thread will come out in jerks, and the upper thread in the line will periodically loop from below.

Often the reason for contacting a sewing machine repairman is that the upper thread is poorly adjusted. You tighten it almost completely, but the tension is still too weak. Look, it is possible that lint from the thread has accumulated between the tensioner plates, which prevents the washers from fully compressing. The tensioner mount (Seagull) may have loosened.

But still, most often for sewing machines such as Chaika, the parameters of the shuttle and the needle fail. This is a complex type of repair of a sewing machine, or rather a setting, but for general acquaintance it is desirable to know the main reason due to which all the “trouble” of sewing machines occur.

The most common cause of sewing machine failure is the top thread. Thread breakage, thread winding in the stitch, uneven stitching, gaps, etc. All this often depends on the upper thread tensioner.
It is the fastening of the tension regulator (Seagull) that most often causes its poor performance. The plastic case is pressed under the pressure of the screw, and over time, the tensioner begins to stagger, or even “falls out” of the case.

In this photo, the arrows indicate the fastening of the needle bar and tensioner. When sewing rough fabrics, cross seams in leather, and especially when hemming jeans, the needle bar may move up with the needle.
Slightly loosen the screw and adjust its position, make sure that the blade and needle groove are in the correct position in relation to the hook (not turned left or right).
For details on how to disassemble and assemble the sewing machine tensioner, see the article “Chaika Sewing Machine Tensioner Device”.

Adjusting the shuttle mechanism of sewing machines performing the zigzag stitch Chaika, Podolsk, Veritas and others involves setting the position of the looper nose above the eye of the needle by 1.2 (3) mm at the moment the looper nose approaches the needle. This setting is checked when the sewing machine sews not only the straight stitch, but also the left and right needle points (when sewing the zigzag stitch).
The nose of the hook must simultaneously pass almost close to the blade of the needle - this is the second condition that allows you to form a stitch without gaps.

In this photo, the arrow indicates the fastening of the shuttle shaft. Loosen the screw with a 10 socket wrench, and holding the handwheel with your hand, you can turn the shaft (together with the shuttle), adjusting the position of the hook nose in relation to the needle.

However, this is not all the parameters for adjusting the interaction between the shuttle nose and the needle. There is such a parameter as the timeliness of the approach of the shuttle nose to the needle, namely at the moment the needle starts to rise up. The needle descends to the lowest point, and when it rises by 1.8-2.0 mm, it should meet with the nose of the shuttle, the shuttle removes the loop from the needle and wraps around itself.

But that's not all. For sewing machines that perform a zigzag stitch, there is such a thing as a right and left needle prick. With the left and right injection of the needle, the nose of the shuttle should “confidently” remove the loop formed above the eye of the needle. It should extend just above the eye of the needle, but less than the distance of the eye of the needle itself, approximately 1 mm.

However, such adjustments are most often not required, it is enough just to check with a magnifying glass how the hook interacts with the needle and make sure that repairs, setting up the sewing machine are not needed, and look for another reason. For example, change the threads, thread them correctly, change the needle, clean the bobbin from dust and lint, etc.
To make it easier for you to repair the sewing machine, disassemble the shuttle and study its device. Observe how the stitch is formed when the needle plate is removed. At the same time, check all the shuttle settings described above. See also How the sewing hook works.

The settings above can be used as a guide if you decide to repair your sewing machine yourself. As a rule, the machine will work fine with such gaps, but if you need to sew knitted fabrics that are too thin (silk) or, on the contrary, thickened fabrics, more precise adjustment of these parameters is required, which only the master can set.

In many cases, sewing machine repairs will not be needed if the sewing machine is kept clean and lubricated periodically. If a seamstress takes care of her machine, then, therefore, she will protect it from overloading during work, not give it into “other people's” hands, which means that the sewing machine will break down less often.

After a long period of work, clean the shuttle compartment and other accessible places from dust, lint, and oil stains. Periodically, the shuttle itself, the shuttle mechanism, should be cleaned with a hard hair brush. It is advisable to lubricate the machine at least once every six months, and after lubrication, work on it “idle” a little, especially if the machine has not been used for a long time. During operation, the oil heats up slightly and penetrates better into the nodes and friction points.

It is better to draw machine oil into a medical syringe and bury it in small drops in accessible places where there is friction of metal parts.

The big enemy of all mechanisms is dirt and rust, try to keep the car in a dry, cool place. If the machine will not be used for a long time, keep it away from dust, otherwise the dust oil will harden and the machine will turn hard or even jam. This case is discussed in the article Hand sewing machine Podolsk.

Inexpensive sewing machine: “Pros and cons”
In this article, we will figure out whether such a combination is possible - “an inexpensive and good machine” and how an inexpensive sewing machine worth 3-4 thousand rubles differs from a machine costing 30 thousand.

We sew knitwear without gaps and looping
Many who have tried to sew knitwear on a regular sewing machine have noticed that the machine often refuses to make a beautiful and even stitch. Gaps form in the knitted line, the lower thread winds, and sometimes breaks. Why is this happening and how can it be fixed?

What is the difference between a carpet and an overlock
The carpetlock is a modern and versatile machine that can overcast fabrics, perform a cover stitch and even stitch details like a conventional sewing machine. But it is impossible to repair such a sewing machine with your own hands. You must definitely contact the service center.

Decorative stitching on a difficult area
Sometimes you need to make a perfectly even decorative line on a product, but you can’t draw a line with chalk - traces will remain, and there is not enough experience to scribble “by eye”. Simple tips on how to stitch on "difficult" areas.

Which sewing machine to buy
For those who rarely sew simple products or occasionally perform minor repairs to clothes, you can buy an inexpensive economy-class sewing machine. It performs almost all operations, is easy to manage, and most importantly, it will be cheaper for such a machine to build repairs if it is suddenly needed.

Overlock Setting Tips
Overlock is much more complicated than sewing machines. It is almost impossible to repair an overlock without special knowledge and skills. However, repair or adjustment is not always required, sometimes it is enough just to adjust the thread tension and it will again overcast the fabric with high quality.

Sewing a dress with your own hands
How to sew a dress with your own hands. Technology and sequence of sewing dresses for beginners.

How to make a pattern and other tips for beginners
How to make a pattern, what tools are needed for this. These and many other tips for beginners.

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These machines are 40-50 years old, and they are still sewing, which cannot be said about modern imported consumer goods. I bought it and threw it away, but my grandmother's rarity is carefully kept in many families, as a memory and as a masterpiece of Soviet industry.

Podolsky Order of the Red Banner of Labor Mechanical Plant named after M.I. Kalinina produced such class 2-M sewing machines.

Unpretentious, reliable, easy to operate, always helped out in difficult times, and allowed many to earn a living. It is a pity to see how young people are now getting rid of old things that can serve their owners for a long time. Most of these cars now rest in a landfill. And before the sewing machine was affectionately called the nurse, she fed and sheathed the family.

It's time to get down to business.
First of all, we cut off the fabric that women love to sew on the “waist” of the machine. Believe me, there is no benefit from it, they stick used needles into it, bent, blunt, and then they try to reuse the same needles. And they can not understand why this machine does not sew. In addition, after such sticking, the coating deteriorates and such scars remain. Used needles should be thrown into the trash can, where they belong.

We disassemble the machine, remove all covers, the needle plate, disassemble the shuttle, as shown in the photo.

It can be seen that pile from fabric and threads has accumulated on the body of the shuttle, there are even pieces of thread and all this is mixed with thickened oil.

And here, too, dust and thickened oil.

And this is the place where not a single seamstress, for the entire time of operation of the machine, never looks. Here pile and dust and sand accumulate, in general, everything that gets into the holes of the needle plate.

We remove all this byaka with a needle and tweezers.

The gear rack also needs to be cleaned, it is best to do this with a large needle.

And naturally we clean the shuttle device, it is good to use kerosene for these purposes, if it is not there, then you can remove the thickened oil with a knife or a screwdriver.

All the dirt and old oil was removed, now we proceed to lubricate the machine.
For these purposes, it is best to use a regular disposable syringe, with the thickest possible needle. I don’t advise you to lubricate with an oil can, it pours oil, and you will get dirty on the machine, and you will get dirty yourself. Oil can be purchased at any hardware store. Lubricating Oil Household will do.

Here, the arrows indicate the technological holes for lubrication, we instill 3-4 drops into each hole, no more is needed.

And here it is imperative to drip into both holes, one hole of the needle bar and the second presser foot.

In these places, the needle bar is rarely lubricated at all, the friction here is frantic and the metal is produced, a backlash is formed, as a result of which the needle hits the needle plate or the shuttle.

And accordingly, the foot should also move freely up and down. Without braking, otherwise the fabric will be pressed unevenly, it will simply walk under the foot and the stitches will be of different lengths.

And one more place that must be lubricated.

Winding the bobbin, drip three drops of oil.

And now we put the machine on its side. The arrows indicate all the places that need to be lubricated.

After complete lubrication, we turn the handle for a couple of minutes so that the oil flows into all the joints and crevices of the machine mechanism. Feel the difference, it began to work in a completely different way, softly and quietly.

Pay special attention to the installation of the friction device.
Here you can see how not to do it, usually this is how amateur masters install the friction washer, as a result, they do not turn on the working stroke. After that, they begin to turn on their imagination, cut out pucks from cardboard, wind the wire, in general, whoever is what.

This is how the washer should be, the protrusions should be out.

After that, we tighten the friction screw, and the stop screw.

The result of our work.

Do not store the sewing machine near heating appliances or in cold, damp places.

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I am looking for a good master. In the service center, the machine was ruined for me, I returned it twice, nothing was fixed. After the “repair” I stopped sewing leather. That is, it sews hard and thin, but soft. Just what I need and a complete bummer. And I gave it just to clean it, and make it so that it doesn’t knock much. Doesn't knock)) But it doesn't sew what I need. Now I have another machine, but it also began to knock strongly, and the shuttle device needs to be corrected, but I don’t want to give it back to the service, it’s scary. And in general, I’m afraid to do anything with them, all of a sudden again ?. I ask for advice and help!

I have a Pfaff overlocker, I clean and lubricate it myself. The store explained to me how to service my overlocker myself, well, I read the instructions. And I lubricate the Family sewing machine myself if it starts to knock. You can contact the store where they sell Pfaff, they probably have a good specialist. Good luck to you.

I'm not sure if the semi-plastic shuttle needs to be lubricated. And I regularly clean and vacuum the car myself, as I work with velveteen a lot. Because of this, she gave the whole car to be cleaned, since at that time she was already four years old, all four years on velveteen and has never been opened to clean the entire mechanism. In stores, unfortunately, they send everything to the same service center, since there is only one in Moscow.

I agree that it is not necessary to lubricate the semi-plastic shuttle. Of course, you need to clean the mechanism. My overlocker is also about 4 years old, but I clean and lubricate it only in places accessible to me. True, the overlocker and the sewing machine are different mechanisms and are serviced differently. Do you search only here or on other sites? Maybe you can look at the forums where all kinds of mechanics “sit”?

P.S. I wish your car a speedy recovery.

The service center is not Kedrov, by any chance? Pfaff did a good job for me there.

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Do-it-yourself sewing machine repair - instructions. How to repair an industrial, old (antique)

Clothing is an attribute of the life of every person. It reflects the lifestyle of the individual, his social position and serves as a means of self-expression. In modern society, clothes are made using a special technique that greatly simplifies human labor - sewing machines. The sewing machine cannot always work flawlessly. Like any mechanism, it needs care, tuning, lubrication, and sometimes repair. Repair of the sewing machine with minor malfunctions can be done independently. However, there are such problems in which only a repair shop can bring the sewing machine back to life. Let's try to figure out in which cases it is possible to repair sewing equipment at home, and in which it is necessary to seek help from professionals.

An industrial sewing machine is mainly purchased by firms or people who are professionally engaged in tailoring.A feature of industrial sewing machines is the presence of a table, an electric drive and a lamp. It is better to trust the repair of modern industrial sewing machines to qualified specialists in order to avoid additional problems during self-repair. If the problems are minor or there is no way and means to contact a professional, instructions for repairing an industrial sewing machine will come to the rescue.

Based on the above adjustments, you need to proceed to the next step in setting up the sewing technique, which is to set the gap between the hook nose and the needle point at the time of their meeting in the amount of 0.05-0.1 mm. It should be noted that the needle should pass at a minimum distance from the nose of the shuttle, but not in contact with it.

Another important point of the equipment is the adjustment of the compensation spring tension. It happens that this spring is not in the machine at all, or it is there, but does not work. At the same time, the machine itself can function quite normally, without giving the seamstress a reason to worry. However, it is the correct operation of this spring that allows you to make beautiful lines, especially on delicate fabrics. To adjust this spring, you need to loosen the tensioner mounting screw and completely remove the tensioner. To avoid problems reinstalling the tensioner, draw, photograph, or note how it was assembled. Next, you need to move the spring leash.

The instruction manual for sewing equipment clearly states how to repair and adjust each mechanism. How to repair a sewing machine is also known by professional repairmen who can carry out repairs of any complexity with high quality and in a short time. However, contacting such a specialist can be expensive, so it makes sense to know what problems in sewing equipment can arise and what are the chances of correcting the situation yourself.

A fairly common situation is when problems in working with a sewing machine arise due to improper operation, lack of cleaning and lubrication measures, and a lack of correspondence between the types of needles, threads and fabric. In this case, it is realistic to repair the sewing machine with your own hands. And the first thing to start with in this case is to study the rules for the operation and repair that are attached to the sewing equipment.

Consider the typical problems of sewing equipment, the main causes of their occurrence, which will help answer the main question: how to repair a sewing machine at home.

Breakage of the upper thread - may occur due to:

- incorrect filling of the upper thread;

- entanglement of the upper thread - appears in the case of using tapered spools when sewing, the threads from which come off jerky and in excess. It is this excess that gets tangled behind the creel, which causes the thread to break. The creel is an additional rack for the bobbins, thanks to which the thread is removed upwards, and not to the side;

- excessive tension of the upper thread;

- blunting or curvature of the needle. An ordinary magnifying glass will help to detect the curvature of the needle point. Also, problems with the needle can be signaled by the appearance of a dull sound when the sewing machine is running. When such a problem arises, it is urgent to replace the damaged needle so as not to spoil either the machine or the fabric;

- inconsistencies of threads, needles and fabrics;

- the presence of notches and burrs in the direction of the thread from the spool to the needle. If there are any, remove them with a small file or other grinding tool;

- loosening the spring of the bobbin case lock. If a similar situation arises, you can try to stretch the spring a little, but it will be more reliable to purchase a new serviceable bobbin case;

Lower thread breakage occurs for the following reasons:

- there was a tangle of the lower thread in the shuttle course;

- the thread is not threaded correctly into the bobbin case.The best solution in this case is to check whether your threading steps correspond to the algorithm for threading the bobbin case described in the instruction manual;

- the lower thread is too tight - can be loosened by adjusting the tension of the upper thread or half a turn of the screw in the bobbin case;

- burrs and other defects on the bobbin case - the bobbin needs to be replaced.

Skipped stitches in a line - appears for the following reasons:

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- the use of industrial needles that do not have a cut on the flask for sewing on household sewing machines;

- the angle is set incorrectly or too high. When threading the thread into household sewing machines, remember that the thread is always inserted from the side of the long groove, and the saw blade of the household needle is located on the reverse side. If the corner is fixed too high, then when the needle converges with the nose of the shuttle, the latter will not be able to capture the needle loop;

- dullness, curvature of the needle;

- incomparability of the needle, thread and fabric;

- Accumulation of debris and thickened oil under the needle plate. Cleaning and re-lubricating all parts under the needle plate will solve the problem.

Looping threads, uneven stitching can be observed in the following cases:

- uneven winding of the thread on the spool or bobbin. You should not wind the threads on the bobbin yourself, for this there is a special device that evenly lays the threads, which also guarantees a uniform thread coming off. It is incredibly difficult to achieve this effect manually, and a mistake can lead to the thread being clamped between the turns and the appearance of loops;

- excessively weak / strong tension of the upper thread or excessively strong / weak tension of the lower thread;

- weak / excessive tension of both threads;

- accumulation of pile, dust and debris in the upper thread tensioner - you should disassemble the tensioner and clean everything thoroughly;

- a slot was formed under the leaf spring on the bobbin case. The solution to the problem in this case comes down to buying a new bobbin case.

Violation of the movement of the fabric during the sewing process occurs for several reasons:

- blunt rack teeth;

- Rack teeth are incorrectly positioned.

Factors causing needle breakage:

- there is no correspondence between the needle, thread and fabric;

- the needle is rusted, bent or dull;

- there is a curvature of the needle bar or it is set high / low;

- while sewing, you yourself move the material - you need to adjust the degree of pressing the fabric with the foot, the level of lifting the rack teeth, then the machine will be able to independently move the fabric.

The sewing machine operates slowly and noisily in the following cases:

- lint and dust have collected under the needle plate;

- the machine needs lubrication;

- excessive tension of the drive belt - it is necessary to adjust the belt tension so that when you press your finger, it hardly bends, but sags.

Thus, often the need to repair sewing equipment arises as a result of non-compliance with the rules of operation and insufficient care, and the entire repair of the machine comes down to setting up its mechanisms and replacing a faulty needle or bobbin case.

When buying sewing equipment in stores or from authorized dealers, you get the opportunity to service your machine in the future, and, if necessary, apply for warranty and post-warranty repairs. Additional maintenance of sewing equipment includes:

– training of buyers in the correct use of the machine and all its functionalities, can take place in the form of presentations, master classes, videos;

– training customers in the basics of care, cleaning and lubrication;

– an explanation of typical problems that buyers are able to fix on their own (replace the needle, belt drive, adjust the thread tension, adjust the stitches, clean and lubricate the machine, tighten the screws);

– supplying customers with the necessary set of spare parts and consumables (screwdrivers, oilers, needles, etc.);

– installation of software for electronic sewing equipment;

— provision of related products and sewing accessories.

In case of serious breakdowns, for example, a malfunction of the shuttle socket, problems in electrics and electronics, the client will be forced to resort to the services of a service center, if the equipment is still under warranty, then the problems will be eliminated under the terms of warranty repair. In general, service centers for the repair of sewing equipment perform a variety of repairs: from cleaning and lubrication to replacing electronic circuit boards.

On your own, it’s really possible to change the brushes and the electric drive. The need to replace old brushes with new ones can be determined by turning off the lights in the room and working a little without light. If the engine sparks or makes a crack, then it's time to change the brushes, which can be purchased at service centers or sewing equipment stores. Usually brushes are easy to get: you need to unscrew the fixing washers with a screwdriver. However, in almost all Soviet machines, the brushes are located inside the motor housing.

Repairing a sewing machine motor most often means replacing it. However, buying a new electric motor can be a serious problem, since modern cars do not have a single standard for mounting an electric drive, which cannot be said about the old Soviet ones. Therefore, it would be more correct to contact the service center of the manufacturer of your particular sewing machine. Firstly, they will select the ideal engine and pulley there, and secondly, set up parliaments for turning on the machine and lighting the workplace.

In order for the electric motor to work for a long time and properly, it is necessary to observe the modes of operation and rest, which are prescribed in the operating rules for household sewing machines. Otherwise, the electric motor will overheat, the wires will melt, become exposed over time, which will eventually lead to a short circuit and a complete failure of the engine. Industrial sewing equipment has a different engine structure and more powerful fans, so it can work for a long time without rest. Another useful tip - do not leave the sewing equipment plugged in for a long time, always unplug it, because although the machine will not work, the electric drive will still be powered.

Mechanics who repair sewing equipment have a decent arsenal of tools and fixtures for repairs. Among them: keys, an awl, wire cutters, staples, platypuses, metal rods, needle files, a caliper, a triangular file, pliers, a hammer, a cleaning brush, as well as an oiler and spare parts for repairing a sewing machine. As you can see, there are many tools, some of them are in every home. The most important and necessary tools that every seamstress or tailor should have are a screwdriver, pliers, something from grinding material, a rosary for cleaning and an oiler. Everything else, if necessary, can be purchased or borrowed.

Video (click to play).

If, nevertheless, a breakdown occurs and spare parts for the sewing machine are needed, there are repair shops and special sewing equipment stores that offer a wide range of parts: legs, bobbin case, thread take-up, motor, thread tension regulator, gear rack, presser foot lifter, presser foot holder, presser foot screw, stitch length dial, foot control, needle plate, needles and needle bar. In addition, parts can be ordered in online stores.

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