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 sewing machine begins to "act up" in violation of the rules of its operation, specified in the instructions or not observing simple settings and adjustments.
Main reason for failure sewing machine- this is sewing fabrics that are not intended for this model of a sewing machine. Hemming the double hem of jeans, replacing the zipper in 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.
The main part of the sewing machine is the needle
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 entire 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.
Used needles do not need to be thrown away, 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. Outwardly, 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 bottom 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 regulated. You tighten it almost completely, but the tension is still too weak. Look, perhaps, between the tensioner plates, thread linters have accumulated, which prevent the washers from fully compressing. The tensioner fastening (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 occurs.
Fixing the needle bar and tensioner
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.
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.
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 it is necessary 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.
Care and lubrication of the sewing machine
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 "the wrong" 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 a little “idle”, 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
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1 PFAFF INSTRUCTION MANUAL This instruction manual can also be used for sewing machines of the following class: Pfaff 244 # Pfaff 1243 # Pfaff 1244 #
2 Contents Page 1. Safety instructions Regulations General safety instructions Safety symbols Important information Operating personnel and specialists Maintenance personnel Specialists Safety instructions Application area Technical data PFAFF PFAFF 244 / PFAFF Classes and divisions Sewing machine disposal Transport, packaging and storage Delivery to the customer's factory Transportation to the customer's factory Disposal of packaging Storage Operating symbols Operating elements Main switch foot control 911/97) Foot control pedals (for sewing machines with presser foot release 910/Knee switch (for sewing machines without automatic bartacking and presser foot operation 911/97) Buttons on the head sewing machine (for sewing machines with automatic bartacking and presser foot operation 911/97) Lever for lifting the roller foot Lever for adjusting the stitch length and sewing reverse direction Lever for adjusting the stitch length (for sewing machines without automatic bartacking device and presser foot 911/97)
3 8. Installation and commissioning Installation Adjusting the table height Tensioning the V-belt Installing the top part of the V-belt protection cover Installing the bottom part of the V-belt protection cover Installing the position sensor Mounting the spool holders Commissioning Switching on/off the sewing machine Equipment Installing the needle for PFAFF Installing the needle for PFAFF 244 or PFAFF Winding the bobbin thread / adjusting the bobbin thread tension Removing / inserting the bobbin case Threading the bobbin case / adjusting the bobbin thread tension (for PFAFF 1243) Threading the upper thread / Adjusting the upper thread tension (for PFAFF 1243) Threading the upper thread / Adjusting upper thread tension (for PFAFF 244 or PFAFF 1243) Maintenance and care Maintenance and care intervals Cleaning the looper compartment and the looper itself Lubricating the sewing machine Lubricating the looper Lubricating the elements of the sewing head water supply on the service unit Adjustment Adjustment instructions Tools, templates and other auxiliary material Abbreviations Aligning the sewing machine mechanism Cloth feed position Feed feed height Needle lift height (pre-adjustment) Needle position relative to the hole in the throat plate (for PFAFF 242 or PFAFF 1242) Movement of the feed dog in the horizontal direction Movement of the feed dog in the vertical direction Initial position of the drive of the roller foot (only for subclass 4/01) Synchronous operation of the roller foot and feed (only for subclass 4/01) 11 9
4 Roller foot disengagement when sewing in reverse direction (only for subclass 4/01) Distance between needle tip and looper nose buttonhole lift, needle lift height and needle protector Bobbin case releaser Slip clutch Distance between roller foot and sliding plate Roller foot pressure Loosen upper thread tension Thread take-up spring (for PFAFF 1243 and machines without 900/56) Thread take-up spring (for PFAFF 244 and PFAFF 1244 without 900/56) sewing machines with device 911/ Adjusting the starter lever on sewing machines without device 911/ Adjusting the thread trimmer Actuating solenoid Control cam (pre-adjustment) Spring operated control lever Stroke of the control lever Thread catcher drive Connecting rod (for PFAFF 244 and PFAFF 1244) Lifting height of the thread catcher Quiet position thread catcher Knife pressure Lower thread clamp Control cam (final adjustment) Release lever Release bar Position sensor adjustment Spare parts list
5 1. Safety instructions 1.01 Regulations The machine has been manufactured in accordance with European standards and regulations. In addition to this manual, we also recommend that you comply with generally accepted, legal and other standards and regulations, as well as regulations for protecting the environment! The regulations of the local Association of Employers or other inspection authorities must also be observed! 1.02 General safety instructions Commissioning of the machine is recommended only after careful reading of the accompanying operating manual and in the presence of operating personnel who have passed a special training course! Before putting the sewing machine into operation, read the safety instructions and the operating manual for the sewing machine motor! Make sure that the sewing machine is equipped with safety devices! The machine must only be used for its intended purpose and with safety devices; in doing so, all relevant safety regulations must be observed. When changing sewing equipment (such as needle, presser foot, slide plate, feed and bobbin), when threading, when leaving the workplace, as well as during maintenance and repair work, the sewing machine must be turned off or using the main switch or by disconnecting the power plug from the socket! Daily maintenance work must only be carried out by specially trained personnel! During maintenance and repair work on pneumatic equipment, the sewing machine must be disconnected from the pneumatic power supply! Exceptions are only allowed for adjustment and function checks carried out by specialists who have undergone a special training course! Repairs or special maintenance work must only be carried out by specialists or trained personnel! Work on electrical equipment must only be carried out by qualified personnel! 1-1
6 Work with elements and equipment under voltage is not allowed! Exceptions may be made in accordance with the EN directive Modifications to the machine and modifications to the design may only be carried out if all relevant safety regulations are observed! For repairs, it is recommended to use only branded spare parts! We draw your attention to the fact that the spare parts and working elements of the machine manufactured by another company have not been tested by us and have not been approved for their use on the machines of our company. The use of such products may adversely affect the design features of the machine. We accept no liability for damage resulting from the use of non-original spare parts. Safety symbols Hazardous operating elements! Important Instructions. Risk of injury to operating personnel and specialists! Caution Do not operate the sewing machine without the finger guard and other safety devices. Before threading, changing the bobbin or needle, cleaning, etc. turn off the main switch Important information This instruction manual is an integral part of the machine and should always be at hand. Read the operating manual before putting the machine into operation. Maintenance personnel and specialists must be familiar with the safety devices of the machine and the methods of safe operation. The sewing machine may only be used if it is in perfect working order. 1-2
7 The user should only operate the sewing machine in good condition. It is the user's responsibility to ensure that all safety devices are installed. It is the user's responsibility to ensure that the machine is operated only by qualified personnel. Other instructions can be obtained from our sales office. 1-2a
8 1.05. Maintenance personnel and specialists Maintenance personnel Maintenance personnel are those whose duties include equipping, operating and cleaning the machine, as well as troubleshooting minor faults during operation. The operating personnel must observe the following points: Observe all safety instructions in the operating manual during work! Do not perform work that violates the safety regulations for the operation of the sewing machine! Wear tight-fitting clothing. It is forbidden to wear jewelry in the form of chains and rings! Make sure that only qualified personnel are allowed to access hazardous elements! Report all changes in the design of the machine that violate safety regulations immediately to the management Specialists Specialists are persons with a special technical education in the field of electrical engineering, electronics, pneumatics and mechanics. They lubricate, maintain, repair and align the machine. Specialists are obliged to observe the following points: Observe all safety instructions in the operating manual during work! Before starting repair and adjustment work, switch off the main switch and prevent it from being switched on unintentionally! It is not allowed to work with elements and devices under voltage! Exceptions can be made in accordance with the EN regulation After maintenance and repair work, install all protective covers! 1-3
9 1.06. Safety Instructions When using the sewing machine, it is necessary that there is a free space of at least 1 m around it in order to ensure free access if necessary. In the process of sewing work, do not allow your hands to get under the needle! Danger of injury! When installing the sewing machine, do not leave foreign objects on your desktop! They can get pinched and fly off in the face! Danger of injury! During mechanical operation of the clutch motor without a blocking device, it is necessary to wait for the complete stop of the motor! Danger of injury! Do not operate the sewing machine without a safety device Risk of injury due to operation of the thread take-up lever! Do not operate the sewing machine without belt guards 2 and 3! Risk of injury during drive belt operation! Do not operate 2-needle sewing machines without the finger guard 4! Risk of injury due to needle operation! Do not operate the sewing machine without the safety device 5! Very heavy sewing machine top! If the top of the sewing machine is tilted back, the machine may tip over! 1-4
10 2. Applications PFAFF 244 is a 2-needle double lockstitch sewing machine equipped with a roller foot, bottom feed and vertical looper. The PFAFF 1243 is a single-needle double lockstitch sewing machine equipped with a roller foot, bottom feed and large vertical looper. PFAFF 1244 is a 2-needle double lockstitch sewing machine equipped with a roller foot, bottom feed and large vertical looper. The sewing machine is designed to perform a double lockstitch on textiles and leather. Non-compliance with the manufacturer's recommendations when using the sewing machine is considered to be the use of the product for other purposes! In the event of a breakdown as a result of using the machine for other purposes, the manufacturer's warranty obligations are terminated. Intended use of the machine also includes compliance with the maintenance, installation, maintenance and repair recommendations prescribed by the manufacturer. 2-1
11 3. Technical data PFAFF 242/1242 Stitch type (double lockstitch) Needle system Needle thickness in 1/100 mm: Class B Class C Thread thickness, max. (synthetic t) Class B 40/3 Class C 15/4 Stitch length, max. Grade BN 6.0 Grade CN 6.0 Flywheel diameter Grade B Grade C 80 mm 90 mm Sewing machine dimensions: Length approx. 270 mm Width approx. )...about 42kg Operating voltage...refer to the instruction manual for the sewing machine motor Maximum power consumption...refer to the instruction manual for the sewing machine motor Fuse...refer to the instruction manual for the sewing machine motor Consumption compressed air... 0.8 l/duty cycle Noise level: Noise level at work at engine speed n PFAFF 242= 2300 min -1 83dB(A) PFAFF 1242= 1800 min -1 83dB(A) Noise level according to DIN standard A-1 3-1
12 3.02. PFAFF 244/243/1243* Stitch type (double lockstitch) Needle system Needle thickness in 1/100 mm: Class A Class B Class C and C/D Class D Thread thickness, max. (synthetic t) Class A... 60/3 Class B... 40/3 Class C and C/D... 15/3 Class D... 11/4 Stitch length, max. Class AN2.5... 2.5 mm Class A and B... 4.5 mm Class CN8,C\DN8,DN8... 6.0 mm Number of stitches, max.* Class B min -1 Class C min -1 Class C, C/D and D min -1 Flywheel diameter Class A and B mm Class C,C/D,D mm Sewing machine dimensions: Length... approx. 530 mm Width... approx. 177 mm Height (above table)... approx. 265 mm Width of work area mm Height of work area mm Distance between roller foot and sliding plate (with foot up)... 5 mm Net weight (upper part)... approx. 42 kg voltage... see sewing machine motor operating manual Maximum power consumption... see sewing machine motor operating manual Fuse... see sewing machine motor operating manual Compressed air operating pressure... 6 bar Compressed air consumption... 0.8 l/duty cycle Noise level: Noise level at work at max. engine speed n = 1500 min dB(A) Noise level according to DIN A-1 3-2
13 Classes and subclasses PFAFF 244 Class A only for thin fabrics Class B... only for medium fabrics PFAFF 1243 and 1244 Class C and C/D only for medium and medium-heavy fabrics Class D... only for heavy fabrics Optional equipment: Subclass 750/04... roller presser drive Subclass 900/56...thread trimmer Subclass 911/97...automatic bartack and presser foot lifter Machine type Subclass RPM (min -1) A 2500 PFAFF 244 V 2500 C 2100 PFAFF 1243 C/D 1800 D 1800 C 2000 PFAFF 1244 C/D 1700 D
14 4. Disposal of the sewing machine Proper disposal of the machine is the responsibility of the user. For the manufacture of the machine, materials such as steel, aluminum, brass and plastic were used. Electrical equipment is made of plastic and copper. Disposal of the machine must be carried out in accordance with the environmental regulations of the local legal authorities. Ensure that parts containing grease are disposed of in accordance with environmental regulations! 4-1
15 5. Transport, packaging and storage Delivery to the customer In Germany, the sewing machine (with table and motor) is delivered to the customer without packaging. Sewing machine without table (upper part only) for export, delivered to the customer in a package. Ensure that the machine is properly transported Disposal of packaging The machine is packed using paper, cardboard and artificial fibre. Disposal of the packaging is the responsibility of the customer. Storage The machine can be stored for up to 6 months when it is not in use. At the same time, it must be protected from dirt and moisture. For longer periods of storage, the individual parts of the machine, especially their surfaces, must be protected against corrosion by applying an oil film on them. 5-1
16 6. Operating symbols In the following chapters of this manual, important instructions and operations are marked with symbols. The symbols shown have the following meanings: Notes, important information Cleaning, maintenance Lubrication Maintenance, repair, adjustment, maintenance (performed only by specialists) 6-1
17 7. Operating items Main switch The sewing machine is turned on or off by turning the main switch 1. The sewing machines with the Quick motor are equipped with this switch. If the sewing machine is equipped with another type of motor, then another type of switch is used. Foot control (for sewing machines without automatic bartacking and foot operation -911/97) 0 = rest position +1 = sewing -1 = thread trimming (on sewing machines with thread trimmer -900/56) For other foot control functions, refer to the motor manual. 7-1
18 7.03. Foot control pedal (for sewing machines with automatic bartacking and presser foot operation -911/97) 0 = rest position +1 = sewing work -1 = roller foot up -2 = thread trimming (on sewing machines with cutter thread control -900/56) For other functions of the foot control, refer to the motor manual with thread trimmer -900/56) +2 = roller presser foot lift For other foot control functions, see the motor manual. 7-2
19 7.05. Knee lever (for sewing machines with automatic bartack and presser foot operation -911/97) Manipulation of the knee lever 1 raises the roller foot Button on the sewing machine head (for sewing machines with automatic bartack and presser foot operation 911/97 ) By manipulating button 1 during sewing, the sewing machine switches to a stitch in the reverse direction. 7-3
20 7.07. Roller foot lifting lever When lever 1 is lifted up, the roller foot is lifted. The figure shows the PFAFF sewing machine Lever for adjusting the stitch length and sewing in the reverse direction The stitch length is adjusted by turning the knurled nut 1. When lever 1 is lifted up to the stop, the sewing machine switches to sewing in the reverse direction. Do not switch the sewing machine to reverse stitching at maximum engine speed! 7-4
21 7.09. Lever for adjusting the stitch length (for sewing machines with automatic bar-tacking and presser foot 911/97) The stitch length for normal stitching is adjusted by turning knurled screw 1. The stitch length for reverse stitching is adjusted by turning knurled screw 2. When sewing reverse stitching, any stitch length can be set regardless of the stitch of normal stitching. Stitch adjustment for back-tacking at the beginning and end of stitching in automatic mode is described in the instruction manual for the sewing machine motor.
22 8. Installation and commissioning Installation The sewing machine must be installed and commissioned only by qualified personnel! In doing so, all safety regulations must be strictly observed1 If the sewing machine is supplied without a table, the stand provided for its installation and the top cover of the table must be designed for the corresponding weight of the sewing machine complete with motor. The place where the sewing machine is installed must be provided with power sources for supplying electricity and compressed air, good lighting and a sufficiently solid foundation. In accordance with the terms of delivery, the table top is lowered. The table height adjustment is described below. Table height adjustment Loosen screws 1 and 2 and adjust the desired table height. Tighten the screws 1. Adjust the required position of the foot control and tighten the screw
23 Tensioning the V-belt Loosen the nuts 1. Tension the V-belt using the motor balancer 2. Tighten the nuts 1. The figure shows the Quick motor. If the sewing machine is equipped with a different type of motor, refer to the instruction manual for the belt tension. Installing the upper part of the V-belt guard When using a large-diameter flywheel, the corners 1 of the V-belt guard 3 break off. Screw the holder 2 to the element of the protective device 3. Screw the element of the protective device 3 with screws 4. Screw the element of the protective device 5 with screws 6. Screw the element of the protective device 7 with screws 8 to the table top. 8-2
24 Fitting the lower part of the V-belt guard Align the guard 1 so that the motor wheel and the V-belt can rotate freely. The picture shows the Quick engine. If another type of motor is installed on the sewing machine, refer to the instruction manual for belt tension for a description of the belt tension.
25 Fitting the position encoder Place the position encoder 1 on the shaft. Tighten the screws slightly 2. Connect the plug of the position encoder to the control box. Adjust the position sensor (see chapter Adjusting the position sensor) Installing the spool holders Mount the spool holders as shown in Fig. Then install the holders in the holes on the table top and fasten with the supplied nuts.
26 8.02. Commissioning Check the sewing machine, especially the electric cable and compressed air hose, for damage. Clean and oil the sewing machine (see chapter 10 Maintenance and care). Have a specialist check whether the operating voltage of the sewing machine motor is selected correctly and whether it is correctly connected to the terminal block. Otherwise, putting the sewing machine into operation is strictly prohibited. During the operation of the sewing machine, the flywheel should rotate towards the attendant, if the wheel rotates in the opposite direction, it is necessary to instruct the specialist to rearrange the machine's engine. Connect the sewing machine to the compressed air supply. In this case, the pressure on the pressure gauge should be about 6 bar. Otherwise, the pressure must be adjusted (see chapter Checking and adjusting compressed air pressure) Switching the sewing machine on and off Switch the sewing machine on or off (see chapter Main switch). Check the operation of the sewing machine. 8-4
27 9. Equipment Observe all instructions and instructions in this operating manual. All work on equipping the sewing machine must be carried out by personnel who have undergone a special training course. Before carrying out the help of the main switch or unplug the mains plug from the socket! Setting the needle on sewing machines PFAFF 242,1242 Switch off the sewing machine! /sp Danger of unintentional switching on of the sewing machine! Use only needle size 134. Raise the presser foot. Bring the needle bar to its upper position and loosen screw 1. Install needle 2 as far as it will go (the long groove must be turned to the left). Tighten screws 1.
28 The choice of needle depends on the class of the sewing machine, the fabric being processed and the thread (see chapter 3. Technical data). Installing the needle on sewing machines PFAFF 1243 Switch off the sewing machine! Danger of unintentional switching on of the sewing machine! Use only needle system 134. Raise and swing the roller foot to the side. Bring the needle bar to its upper position and loosen screw 1. Install needle 2 as far as it will go (the long groove of the left needle must be turned to the right, the right needle to the left). Tighten screw 1. The choice of needle depends on the class (see chapter 3. Technical data). sewing machine, fabric and thread 9.03 Inserting the needle on PFAFF 1244 sewing machines Switch off the sewing machine! Danger of unintentional switching on of the sewing machine! Use only needle system 134. Raise and swing the roller foot to the side. Bring the needle bar to its upper position and loosen screw 1. Install needle 2 as far as it will go (the long groove of the left needle must be turned to the right, the right needle to the left). Tighten the screws 1. The choice of needle depends on the class of the sewing machine, the fabric being processed and the thread (see chapter 3. Technical data).
29 9.04. Winding the bobbin thread / Adjusting the bobbin thread tension Place the bobbin 1 on the bobbin winder spindle 2. Thread according to the figure and wind the bobbin 1 clockwise a few times. Turn on the winder, to do this, simultaneously press the winder spindle 2 and lever 3. The bobbin is wound during sewing work. The thread tension on the bobbin 1 is adjusted using the knurled screw 4. The winder will turn off automatically as soon as the bobbin 1 is full. If the thread winding is uneven: Loosen the nut 5. Turn the thread guide 6. Tighten the nut
30 9.05. Removing and installing the bobbin case Switch off the sewing machine! Danger of unintentional switching on of the sewing machine! Removing the bobbin case Raise the thread tension lever. Open the top cover. Raise the bobbin case 1 and take out the bobbin case 2. Installing the bobbin case Install the bobbin case 2 until you hear a click. Lower bracket 1 and close the top cover of the column. Do not turn on the sewing machine without the top cover. Risk of injury due to moving machine parts! Threading the bobbin case and adjusting the bobbin thread tension Switch off the sewing machine! Danger of unintentional switching on of the sewing machine! Thread the bobbin case as shown in Fig. While pulling the thread, the bobbin should rotate in the direction of the arrow. Adjust the bobbin thread tension with screw 1.
31 9.06. Threading the upper thread. Adjusting the tension of the upper thread (for sewing machines PFAFF 1243) Risk of injury due to unintentional starting of the sewing machine Thread the upper thread according to fig. When doing this, make sure that the thread is inserted into the needle from the left. Adjust the thread tension by turning the knurled screw
32 9.08 Upper threading. Upper thread tension adjustment (for sewing machines PFAFF 242 and PFAFF 1242) Switch off the sewing machine! Risk of injury due to unintentional switching on of the sewing machine! Thread the upper thread in accordance with Fig. In this case, it is necessary to ensure that the thread is inserted into the right needle from the left, and into the left needle from the right. Adjust the thread tension by turning the knurled screw 1 (right needle) or 2 (left needle).
33 9.09 Upper threading. Upper thread tension adjustment (for sewing machines PFAFF 244 and PFAFF 1244)
34 10. Servicing and maintenance Frequency of maintenance and preventive maintenance Cleaning the looper compartment... daily, more often in case of long-term operation Checking the compressed air pressure... daily, before operation Cleaning the water tank on the service unit... daily, before operation Lubrication looper...daily, before use Clean the looper...once a week Lubricate the sewing machine...twice a week Lubricate the sewing machine head...twice a week These maintenance intervals apply to sewing machines with an average life when processing fabric in one layer. More frequent service work is recommended for longer periods Cleaning the hook compartment and the hook itself Switch off the sewing machine! Danger of unintentional switching on of the sewing machine! Daily, or more frequently if the sewing machine is used for a long time, clean the looper compartment with a brush. The looper should be thoroughly cleaned once a week. Open the top cover of the column. Bring the needle bar to its highest position. Pull out the top part of the bobbin case together with the bobbin. Unscrew the looper bracket 1. Turn the handwheel until the nose of the lower part of the bobbin case 2 enters 5 mm into the groove of the looper guide. In this position, remove the lower part of the bobbin case 2. Clean the looper guide with petrol. When installing the lower part of the bobbin case, make sure that the spout 3 enters the groove of the sliding plate. Screw on the looper bracket 1. Install the bobbin case and close the column top cover. 10-1
35 Lubrication of the sewing machine mechanism Lubricate the bearings of the upper part of the sewing machine twice a week (see arrows) Switch off the sewing machine! Danger of injury! Pull the knee lever forward and tilt the sewing machine backward. Twice a week, lubricate the bearings of the sewing machine mechanism located under the worktable cover. Place the sewing machine in place with both hands. There is a risk of trapping hands between top sewing machine and table cover. Use only engine oil with an average viscosity of 22.0 mm2/s at 40°C and a density of 0.865 g/cm3 at 15°C. We recommend PFAFF engine oil
36 Lubricating the looper Switch off the sewing machine! Risk of injury due to unintentional switching on of the sewing machine! Open the looper compartment cover. Bring the needle bar to its highest position. Add 1-2 drops of oil to hole 1 of the looper bracket. Add a few drops of oil to the looper guide (see arrow). Use only engine oil with an average viscosity of 22.0 mm2/s at 40°C and a density of 0.865 g/cm3 at 15°C. We recommend PFAFF engine oil
37 Lubrication of the sewing machine head Switch off the sewing machine! Risk of injury due to unintentional switching on of the sewing machine! Unscrew the top cover of the sewing machine head. Lubricate all parts and bearings in contact twice a week. Screw the top cover of the sewing machine head back on. Use only machine oil with an average viscosity of 22.0 mm2/s at 40°C and a density of 0.865 g/cm3 at 15°C. We recommend PFAFF machine oil. air. The pressure value on pressure gauge 1 must be 6 bar. Otherwise, the pressure should be adjusted. To do this, lift button 2 up and turn it in the appropriate direction.
38 10.07 Emptying the water tank/Cleaning the water tank Switch off the sewing machine! Risk of injury due to unintentional switching on of the sewing machine! Emptying the water tank 1 is carried out automatically after disconnecting the compressed air cable from the service unit. Unscrew the water container 1 and unscrew the filter 2. Clean the filter with compressed air or isopropylene solution. Serial number Screw in the filter again and screw on the water container. 10-5
39 11. Adjustment All illustrations in this chapter show the 2-needle sewing machine. All work on adjusting the PFAFF 1243 single-needle sewing machine is carried out only on one side, i.e. only in the right looper compartment Alignment Guide All adjustment work presented in this manual only applies to a fully assembled sewing machine and should be performed by trained personnel. The covers of the sewing machine, which must be removed for inspection and adjustment work and then reinstalled, are not mentioned in the text. The screws and nuts given in brackets () are the fastening elements of the sewing machine, which are unscrewed before adjustment, and then tightened again after it. Tools, templates and other auxiliary material. Set of screwdrivers with a tip width of 2 to 10 mm. 14 mm Set of 2 to 6 mm hex socket wrenches Metal scale (serial number) Gauge for lifting the buttonhole (serial number) System needles 134 Threads and material Abbreviations o.t. = top dead center u.t. = bottom dead center 11-1
40 Adjusting the sewing machine mechanism Position of the feed dog Rule 1. The feed dog must be positioned in the slot on the sliding plate so that the distance between it and the edges of the slot on both the right and left is the same. 2. When sewing a stitch of maximum length, the feed dog must stop at the same distance from the edges of the slot in the slide plate at both the front and rear return points. Loosen screws 1 and 2. Move slider 3 according to rule 1. Tighten screws 1. Set the maximum stitch length. Move the slider 3 in accordance with rule 2 and tighten the screws 2. The surface of the pin 4 must be opposite the screws 1, and the slider must simultaneously have play and be in close contact with the guide. 11-2
41 Lifting height of the feed dog Rule With stitch length “0”, the lower feed dog at the upper return point must protrude above the slide plate by the height of the tooth. Set stitch length to "0". By turning the handwheel, bring the lower feed dog to the upper return point. Adjust support 1 (screws 2) according to the rule. 11-3
42 Needle lift height (pre-adjustment) Rule In the position of the needle bar at top dead center, the distance between it and the throat plate should be 15 mm. Move the needle bar 1 (screw 2) without turning according to the rule.
43 Needle position in the needle hole (for PFAFF 242.1242) Rule With the stitch length dial “0” set, the needles must exactly fall into the center of the needle hole in the feed dog. Set the stitch length “0” and the needle bar to TDC Unscrew the screws 1,2,3,4 By turning the handwheel of the needle, place directly in front of the needle holes. and tighten with screw 4. The frame of the needle bar 5 should not have a heavy stroke in the guide 7. Heavy movement can be eliminated by loosening the screw 8
44 Position of the needle in relation to the needle hole in the needle plate (for PFAFF 244,1243,1244) Rule With a stitch length of "0", the needle must be placed exactly in the center of the hole in the needle plate. Loosen screws 1, 2 and 3. Turn the handwheel to position the needle directly above the feed dog. Adjust the position of the needle bar frame 4 according to the rule Tighten screws 1, 2 and
45 Movement of the feed dog in the horizontal direction (for PFAFF 242,1242) Rule In the needle position at BDC, the lower feed dog must not move when the maximum stitch length is set and the stitch changeover lever is manipulated. Set the maximum stitch length. Loosen screws 1 so that the eccentric 2 can hardly turn on the shaft. Bring the needle bar to the BDC position. Install the eccentric 2 with a large eccentricity downwards, then turn it slightly in the direction of rotation in accordance with the rule. Tighten the screws
46 Turn down Feed movement in the horizontal direction (for PFAFF 244,1243 and 1244) Rule In the TDC needle position, the lower feed dog should not move when the maximum stitch length is set and the stitch selector lever is manipulated. Set the maximum stitch length. Loosen screws 1 so that the eccentric 2 can hardly turn on the shaft. Bring the needle bar to the TDC position. Install the eccentric 2 with a large eccentricity downwards, then turn it slightly in the direction of rotation in accordance with the rule. screws 1.
47 Movement of the feed dog in the vertical direction (for PFAFF 242,1242) Rule 1. In the position of the needle bar BDC, the lower feed dog must be located at the upper return point. 2. At the maximum stitch length, the edges of the teeth of the lower feed should be flush with the needle plate when the tip of the needle is in the needle hole. Bring the needle bar to BDC. Move the eccentric 1 (screws 2) in accordance with rule 1. In this position, slightly turn the now accessible screw 2 so that the eccentric 1 can be turned with difficulty. Turn eccentric 1 slightly according to rule 2. Tighten both screws
48 Movement of the feed dog in the vertical direction (for PFAFF 244,1243 and 1244) Rule In the TDC needle bar position, the lower feed dog must be located at the upper return point. At the maximum stitch length, the edges of the feed dog teeth should be flush with the needle plate when the needle tip is in the needle hole. Bring the needle bar to TDC. Move the eccentric 1 (screws 2) in accordance with rule 1. In this position, slightly turn the now accessible screw 2 so that the eccentric 1 can be turned with difficulty. Turn eccentric 1 slightly according to rule 2. Tighten both screws
49 Roller foot drive home position (only for subclass -4/01) Rule 1. At the maximum stitch length, the clamp surfaces of lever 1 should be set horizontally at the front return point. 2. Lever 3 must be located in the middle of the slot on the lever. Lever 5, being at the rear return point, must be located at a distance of 18 mm (version N) or 8 mm (version N8) from the side cover. Set the maximum stitch length. Turn lever 1 (screw 2) according to rule 1. Install lever 3 (screw 4) according to rule 2. Install lever 5 (screw 6, accessible from above through the hole in the housing) according to rule
50 Synchronized operation of the roller presser foot and the lower feed dog (only for subclass -4/01) Rule The movement of the roller presser foot and the lower feed dog must be simultaneous. Lever 1 (screw 2) adjust according to the rule
51 Roller foot disengagement when sewing in reverse direction (only for subclass 4/01) Rule 1. The roller foot must be disengaged when sewing in reverse direction (cylinder 8 operation). 2. With the roller foot down and the feed feeder, the distance between the tubular split pin 6 and the bearing 7 should be 0.5 mm (without manipulation of the cylinder 8). Move valve 1 (screws 2) in such a way that, when manipulating lever 3, valve 1 switches between scale divisions 0 and 1. Move connecting element 4 (screws 5) in accordance with rules 1 and
52 3. Protective distance between the needle and hook point, buttonhole lift, needle lift height and needle guard Rule When adjusting the needle lift height (see table) and stitch length "3": 1. The hook nose should be positioned at the middle of the needle, and the gap between it and the needle should be 0.05-0.1 mm. 2. The upper edge of the eye of the needle should be located 0.8-1 mm below the nose of the shuttle. needle device 8 should lightly touch the needle. Hinge height adjustment: Grade A 1.6 mm below BDC of the needle bar Grade B 1.8 mm below BDC of the needle bar Grade C 2.0 mm below BDC of the needle bar Grade C/D and D 2.4 mm below BDC of the needle bar Set stitch length to "3" and loosen screws 1, 2 and 3.
53 Bring the needle to the bottom dead center and place a template with a thickness corresponding to the thickness of the fabric set for this class of sewing machines under the needle bar bearing. Move the clamp close to the scale and tighten it. Take out the scale and turn the handwheel in the direction of rotation until the clamp touches the needle bar bearing. Move the columns 4 in accordance with the rule 1. Tighten the screws 1. Place the nose of the hook in the middle of the needle, while making sure that the needle does not press on the protective device 5. Make sure that the bevel gear 6 is not too tight, but at the same time, so that the hook is installed without play and tighten the screws 2. Place the setting wheel 7 close to the bevel gear 6 and tighten the screws 3. Adjust the needle lift height according to rule 2. Align the needle guard according to rule 3. After changing the position of the needle bar, it is necessary to adjust the position of the connecting rod for the thread trimmer (see also chapter Connecting rod)
54 Bobbin case lifter Rule The upper thread must not be caught either between the bobbin case lifter 1 and the bobbin case lug 3 or between the pin 4 and the holder on the needle plate. Thread and insert sewing material Lower the roller or presser foot Turn the handwheel to sew a few stitches Adjust the position of the bobbin case opener 1 (screw 2) according to the rule
55 Slip clutch The slip clutch 4 is installed at the factory. When the thread breaks, it uncouples to prevent damage to the hook. Restoring the slipper clutch is carried out as follows. Repair broken thread. Press the piston 1 and turn the handwheel until the locking latch 2 engages in the groove
56 Distance between the roller foot and the slide plate Rule 1. On machines with a presser foot, when the presser foot is raised up, the distance between it and the throat plate should be 8.5 mm. 2. On machines with a roller, when the roller is lifted up, the distance between it and the throat plate should be 5.0 mm. Raise the presser foot/roller using the lever. Reduce presser foot/roller pressure (screw 1). Move rod 2 (screw 3) in accordance with the rule. Adjust according to the instructions in the chapter Presser foot/roller pressure.
57 Presser foot/roller pressure Rule The fabric should feed freely even at high sewing speeds. Turn screw 1 in accordance with the rule. On class D sewing machines, the pressure is further increased by means of a screw
58 Loosening the upper thread tension Rule When the presser foot/roller is raised, the distance between the thread tension discs 4 should be 0.5 mm on average. Adjust panel 1 located behind mounting panel 2 according to the rule. A distance of 0.5 mm is an average value and can be more than 1 mm when using thick threads. With the working tension of the thread, no loads should act on pin 3
59 Thread take-up spring (for PFAFF 1243 and machines without device - 900/56) Rule The movement of the thread take-up spring 5 should stop as soon as the tip of the needle pierces the fabric (spring travel is approximately 7 mm). Move stop 1 (screw 2) in accordance with the rule. To adjust the spring force, turn screw 3 (screw 4). Depending on the nature of the sewing work, the spring travel may be less or more.
60 Thread take-up spring (for two-needle machines with device - 900/56) Rule The movement of thread take-up springs 1 and 6 should stop as soon as the tip of the needle pierces the fabric (spring travel is approximately 7 mm). To adjust the tension force of spring 1, turn screw 2 (screw 3). Turn stop 4 (screw 5) in accordance with the rule. To adjust the tension force of spring 6, turn screw 7 (screw 8). Stop 9 (screw 10) turn in accordance with the rule. Depending on the nature of the sewing work, the spring stroke may be less or more
61 Winder Rule When the winder is switched on, the knurled wheel 5 must also rotate. When the winder is turned off, the knurled wheel 5 must not come into contact with the drive wheel 1. The winder switches off automatically when the bobbin is filled with thread less than 1 mm from the edge. Move the drive wheel 1 (screws 2) in accordance with rules 1 and 2. Move bolt 3 (screw 4) in accordance with the rule
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Once a week, I always get a call and a completely upset girl's voice informs me that the freshly bought machine has completely broken down and does not want to sew.
1. The most common "problem" - the car suddenly starts to wind strongly. From below, loops 2 centimeters long are formed, they are wound on a shuttle and everything gets terribly tangled. Simple logic tells the young lady that, since the loops are from below, then there is a problem with the bottom thread. After that, there is advice on the Internet about adjusting the lower thread and the winged fairy spins the bobbin case, the parts are scattered on the floor, and a sobbing, trembling voice is heard in my receiver.
If the bobbin case did not unwind, then the situation can be easily saved. All you need is fill the top a thread.
The trouble is that in many instructions the procedure for threading the upper thread into the thread take-up is not very clearly described. General principle fillings are easiest to understand on the page from the instructions for Pfaff 1142:
The most important thing here is to raise the presser foot, turn the handwheel so that the thread take-up is in the up position and thread the thread into the thread take-up.
If the machine still makes giant loops on the wrong side, check the threading again. More than once I met ladies who swore by all the treasures of the world that everything was threaded correctly, that she had been sewing for a hundred years and could not make a mistake, and upon arrival, our specialist found that the thread did not get into the thread take-up. After that, the ladies turned very red in the face, apologized very much and shoved a hundred rubles for the trouble.
Proper threading can cut off 99% of cases of strong winding on the wrong side. The remaining percentage may indeed be due to a malfunction of the machine. Usually this effect is caused by burrs on the needle plate or in the hook, and this problem is best addressed to a qualified mechanic.
2. The second "problem" often occurs with buyers of the Janome MyExcel w23u machine. The symptoms of a breakdown are as follows - the LED does not light up and the needle lift button does not work.
Such a “malfunction” is treated very simply - it is necessary to transfer the bobbin winder axis to the left position.
Another common question is related to the winder - why does the bobbin not snap off at the end of winding? Having got used to such behavior of the winder on the "Seagull", the buyer waits for a click and presses the pedal with all his might. However, in most modern machines, the bobbin does not come loose. As it winds, the speed of rotation simply slows down and the winder stops.
3. Often, owners of Janome 7518a (1221, etc.) machines turn to us with the question “Why is the machine sewing slowly and growling loudly?”.
These cars have a switch on the pedal that limits the maximum speed. You can accidentally press it with your foot and not notice it. If the car growls at you, just check the position of this switch.
4. If the stitching turns out to be “loose”, there is no tension on the upper thread, pronounced loops are visible from the inside, and the lower thread is taut with a string - rethread the machine with the foot raised. Perhaps the thread did not get into the tensioner plates. Another reason is that a piece of thread or other debris has got into the tensioner plates and prevents them from getting closer. With the presser foot raised, try to clean the space between the plates with a thick thread.
If the bobbin thread tension is lost, check for debris under the tension spring on the bobbin case (bobbin holder). Do not attempt to clean under this plate with a needle or other metal object. Scratch the shuttle - you are tormented to repair. Better take a toothpick.
5. I have two favorite questions - why the stitch is herringbone and why you can see the "dots" from the upper thread. There is only one answer to these questions - you need to use threads of the appropriate thickness.
I like the seams on my shirts. Smooth, straight, just admire. Now you can see what kind of thread a good men's shirt is sewn with and compare their thickness with the "magpie" from the store. It turns out that the threads on the shirt are twice as thin. At the same time, the shirt fabric is not the thinnest yet. The problem is that on sale it is very difficult to find high-quality threads with a thickness less than #50. On suit fabrics and with a stitch length of 3 millimeters, the "magpie" gives the perfect stitch on almost any machine. And if you try to sew thin silk with a needle No. 90, threads No. 40 and stitches 1.5 mm long, the “Christmas tree” will appear in all its glory, regardless of the design of the shuttle.
The “herringbone” must be on any lockstitch machine, since the upper and lower threads are intertwined with a “cord”. It is enough to mentally remove the fabric from the seam and imagine how the threads are intertwined, it becomes obvious where the “herringbone” comes from. The herringbone becomes almost invisible if the weave of threads is formed deep between the layers of the fabric, and for this the thread should be no thicker than the warp thread. Also, the visibility of the Christmas tree is affected by the length of the stitch. It is possible (on industrial machines) to reduce the visibility of the “herringbone” on the front side, if you turn the needle a little around its axis, but then the “tree” will become more noticeable on the inside.
6. Pulling of the fabric when sewing zigzag and decorative stitches is also not a malfunction. It is impossible to cancel the laws of physics, and if you try to perform a wide zig-zag “magpie” on a thin and loose fabric, then only an adhesive stabilizer will help to avoid contraction. You can, of course, try to loosen the tension of both threads and take thinner threads, but the radical way is a stabilizer.
7. Knocking when sewing at the moment of a puncture is in most cases caused by a dull or inappropriate needle. The correct choice of needles is especially important when sewing from dense fabrics. A universal needle with a rounded point cannot part the tightly interwoven fibers of the material, and punches a hole with a thud. For such fabrics, it is necessary to have in stock sharp needles marked Jeans and Microtex. After replacing the needle, the knock, in most cases, disappears.
8.
Another "problem" that buyers regularly encounter is the lack of a buttonhole foot in the kit. Finding it is easy - it lies separately from the main set of paws, in a removable table under a hinged lid. Janome overlockers often "lose" the converter for double-thread seams. It is poorly packaged in a bag, separate from other personal belongings, and hangs on a pin for installing coils.
Husqvarna Emerald computer machines sometimes lose an entire pedal! The manufacturer has provided for it a convenient place inside the case.
9. I also remembered the “problem” with turning off the teeth of the fabric conveyor. The teeth are perfectly turned off by the corresponding switch, they fall down, but they don’t want to come back, no matter how many times you click the buttons. The casket opens simply - the conveyor teeth will rise to the working position after a full turn of the flywheel. Just flip the switch back and start sewing.
If I remember something interesting, I'll add it here.
Many malfunctions sewing machines are quite common and can be considered as typical. Work failures sewing machine often caused by improper use. Sometimes malfunctions sewing machines appear in the same way, although they are caused by completely different reasons. Therefore, it is logical to classify them according to external manifestations, which are easily determined even by non-specialists.
Often breaking sewing machine is that it ceases to perform its functions correctly: break down needles, threads break, stitches are uneven (skipped stitches, insufficient thread tension, uneven stitches). There can be several reasons for these troubles:
- Use of needles not intended for this type sewing machine. The needle may not match the thread thickness or fabric weight. As a result, the needle will either break, or bend. In this case, you should choose the right one for your sewing machine needles. Using threads that are not designed for the needles installed on your typewriter, or for the fabrics you work with. Each type of needle requires a certain thickness of threads, if this ratio is not chosen correctly, the seam will not be tight enough or the needles will start break.
- Broken needle plate. If the damage to the plate is minor, then you can limit yourself to grinding the window of the needle plate. If malfunction more severe, the needle plate will need to be replaced.
- The settings of the mechanism that causes the needle to lower and rise and move the thread take-up are knocked down. (This mechanism is located on the upper shaft sewing machines.) Correctly adjusting the mechanism on your own is very difficult, since it is connected to the shuttle through the shafts. The slightest deviation from the settings leads to failures in operation sewing machine.
- Breaking shuttle nest. At breakdown shuttle nest car stops sewing, the thread will constantly break.
Other group typical faults associated with the failure of the motor in electrical sewing machines. They appear in sewing machine does not turn on, the motor does not work, there may be a smell of burning. The main reasons for the failure of the motor:
- Wire break
- Motor winding break
- Malfunction packet worker
In electronic sewing machines automation may fail. Manifested malfunction thus: the motor does not turn on, car does not work, while the smell of burning is absent. The most common reasons:
- Failure of the built-in computer sewing machine
- Failure of the control unit sewing machine
In these cases, details repair and restoration not applicable, they need to be replaced.
Sewing machines
Broken sewing machine
Is your sewing machine broken? What to do?
In the event of a breakdown during the warranty period, you can repair the sewing machine free of charge at an authorized service center. Phones and addresses of service centers are indicated in the warranty card. Do not repair your sewing machine yourself. Warranties do not apply to products that have not been repaired at a service center.
In order to repair the sewing machine, it is enough to present a correctly completed warranty card, which is issued upon purchase of the product (with a mark of the trade organization on the date of sale of the sewing machine and with the signature of the seller).
Service engineer call
Calling a service engineer to any district of Moscow. Order and delivery spare parts for sewing machine to the customer. Urgent call. Cash and non-cash payment for sewing machine repair for private clients and organizations. .
Diagnostics and repair of sewing machines
scope of work and repair cost can only be determined after sewing machine diagnostics. In case of successful completion repair, price diagnostics included in repair cost. If a car repair impossible to perform pay per diagnostics will not be taken.
Sewing machine repair price list
Look prices on the diagnostics and sewing machine repair. If a sewing machine repair impossible to perform pay per diagnostics not charged. In case of successful completion repair, price sewing machine diagnostics will be included in repair cost.
Contacts and directions.
Moscow, Central Administrative District, Gilyarovskogo street, 36. (M. Prospekt Mira)
680-58-56 680-61-45
Repair shop Multiservice.
Main activities repair shop.
Conclusion of contracts with organizations.
Sewing machine repair for cash and non-cash payments.
Rating repair shop.
Urgent call to home and office
Urgent help sewing machine at home. Urgent call. Departure of the master to any district of Moscow. Ordering supplies for home delivery. Troubleshooting. Cash and non-cash payment for private clients and organizations.
Help for sewing machine users
Help in at the construction site sewing machines
Troubleshooting in sewing machine.
Helpful Hints on sewing machine repair. Consultations.
Electromechanical sewing machines- simple and very comfortable cars allowing you to master without the hassle sewing. it inexpensive Class sewing machines, all controlled manually, by means of mechanical switches. Instead of smooth adjustments length and width stitch multiple fixed positions uncomfortable adjustment thread tension. All clues can be found on the case sewing machine, the threading of the upper and lower threads is simplified, instructions are needed only in difficult cases. All seams that can perform sewing machine, printed on the front panel. Turning the wheel can choose a seam and install the necessary settings sewing machine
(length and width stitch, thread tension).
Adjustment length stitch and width zigzag. You can change how length chosen by you stitch, and width zigzag. Quality straight stitch higher at sewing machines with horizontal type shuttle. Besides, sewing machines of this type sew much quieter.
Terms of the sewing world
Subject index of sewing subjects.
Setting up and repairing Toyota sewing machines
Toyota Sewing Machine Repair
Company Toyota started its activity from the production sewing machines. Emblem Toyota means the thread passed through the eye of the needle. Continuing to produce sewing equipment high quality company Toyota constantly expanding the range sewing machines. Sewing machines Toyota fully comply with the "philosophy of quality and usability" inherent in the trademark Toyota. Sewing machines Toyota with classic or swing hook, quantity sewing operations depending on the model - 14-20. Setting up Toyota sewing machines Toyota Sewing Machine Repair Adjusting sewing machines Toyota. Pedal for sewing machine Toyota. Sewing machine belt Toyota. Toyota.
Setting up and repairing Brother sewing machines
Brother sewing machine repair
Sewing machines economy - class have 6-14 operations, seams are provided for knitwear, for thick fabrics, sewing on elastic. More expensive models Brother Prestisch, Comfort perform 17-25 operations, can overcast a decorative scalloped edge, knitwear, have a set of decorative stitches. Setting up Brother sewing machines. Brother sewing machine repair in the workshop "Multiservice". Setting up Brother sewing machines. Sewing machine pedal Brother. Sewing machine belt Brother. Electric motor for sewing machine Brother.
Juki Sewing Machine Repair
Broken Juki sewing machine? What to do?
In the event of a breakdown during the warranty period, you can have the machine repaired free of charge at an authorized Juki service center. Phones and addresses of Juki service centers are indicated in the warranty card.
What is needed to repair a faulty sewing machine at a service center?
In order to repair the sewing machine, it is enough to present a correctly completed Juki warranty card, which is issued upon purchase of the product.
Setting up and repairing Janome sewing machines
Janome Sewing Machine Repair
Models of this brand are designed for home sewing. Sewing machines Janome easy to use, have a small number of operations (from 4 to 12 types of lines). For more complex work, there are machines for 15-25 operations (semi-automatic overcasting of buttonholes, adjustment of pressure on the fabric are provided). The New Home brand is currently owned by the largest manufacturer of household sewing machines in the world, Janome Sewing Machines Co. L.T.D. Sewing settings Janome machines . Janome Sewing Machine Repair in the workshop "Multiservice". Setting up Janome sewing machines. Sewing machine pedal Janome. Sewing machine belt Janome. Electric motor for sewing machine Janome.
Setting up and repairing Veritas sewing machines
Veritas sewing machine repair
Veritas sewing machines were produced by the GDR.
Setting up Veritas sewing machines. Veritas sewing machine repair in the workshop "Multiservice". Setting up Veritas sewing machines. Spare parts to sewing machine Veritas. Sewing machine pedal Veritas. Sewing machine belt Veritas. Electric motor for sewing machine Veritas.
Setting up and repairing Jasmine sewing machines
Jasmine Sewing Machine Repair
Setting up Jasmine sewing machines. Jasmine Sewing Machine Repair in the workshop "Multiservice". Setting up Jasmine sewing machines. Sewing machine pedal Jasmine. Sewing machine belt Jasmine.
Setting up and repairing Pfaff sewing machines
Pfaff sewing machine repair
Pfaff sewing machine repair in the workshop "Multiservice". Sewing machines pfaff produced at a factory in the Czech Republic. They provide 16-27 operations, smooth adjustment of seams, foot pressure, needle position, stitch selection button. These models are intended for experienced seamstresses seriously involved sewing deed.
Setting up Pfaff sewing machines
Settings and adjustments sewing machines pfaff are so flexible that they allow you to easily set the desired parameters for one or another sewing program. Setting up Pfaff sewing machines. Pedal for sewing machine pfaff. Sewing machine belt pfaff.
Setting up and repairing Jaguar sewing machines
Jaguar Sewing Machine Repair
One of the most famous brands sewing machines - Jaguar(Taiwan). These cars do 5-13 operations, semi-automatic overcasting of loops, decorative and finishing seams. For convenience seamstresses additionally supplied with a hard table. Setting up Jaguar sewing machines. Jaguar Sewing Machine Repair in the workshop "Multiservice". Setting up Jaguar sewing machines. Spare parts to sewing machine Jaguar. Sewing machine pedal Jaguar. Sewing machine belt Jaguar. Electric motor for sewing machine Jaguar.
Setting up and repairing Singer sewing machines
Singer Sewing Machine Repair
For over 150 years the company Singer is a world leader in the production of quality and reliable sewing technology. Producing a wide range of products from electromechanical to computer sewing machines, company Singer maintains the traditions laid down in 1851 by its founder - Isaac Singer. cars, made a century and a half ago, still work perfectly. Modern models are very convenient and easy to manage, perform from 5 to 18 operations, including hemming with a blind seam, make elastic knitted seams, reinforced seams for denim and corduroy fabrics. Setting up Singer sewing machines. Singer Sewing Machine Repair in the workshop "Multiservice". Setting up Singer sewing machines. Spare parts to sewing machine Singer. Sewing machine pedal Singer. Sewing machine belt Singer. Electric motor for sewing machine Singer.
The main, typical malfunctions and malfunctions in the operation of sewing machines: poor stitching, thread breakage, needle breakage.
Skipped stitches in the stitching of the sewing machine and overlock appear if a poor-quality, unsuitable thread or needle is used. The amount of clearance between the needle and the nose of the hook (the loopers in the overlocker) also has an effect on this.
Faults such as "skew stitch", breakage of the upper and lower threads can usually be corrected by adjusting the tension of both threads. But, if after adjusting the tension, the stitching defects do not disappear, then you will have to adjust the interaction of the shuttle and the needle, the mechanism for advancing the fabric, etc. This is especially true for the Seagull sewing machine. Moreover, if the installation parameters of the "Seagull" shuttle have gone astray, then it is rather difficult to independently perform such an adjustment. But basically eliminate malfunctions and malfunctions of sewing machines can be done by properly adjusting the thread tension, changing the needle, lubricating and cleaning the machine.
After disassembly, the upper thread tensioner is not properly assembled.
- Incorrect threading.
- Poor thread quality.
- The thread number does not match the needle number.
- Weakened bobbin case lock spring.
Inside the bobbin case you can find a very small screw, and if you unscrew it, the lock mechanism can be removed and a long spring can be found. Try to stretch this spring a little, but it is better to buy a new bobbin case.
- On the way the thread passes to the needle, there are notches, burrs.
Carefully follow the path of the thread and, after detecting notches, remove them with a small needle file. In older machines such as Podolsk, there may be thread cuts on the tensioner rod. Disassemble the tensioner and inspect the rod, if there are such cuts, remove them with sandpaper.
2. Reasons for the breakage of the lower thread
The reason for the breakage of the lower thread may be low-quality thread, for example, cotton thread of the Soviet era.
- The screw that presses the spring (plate) on the bobbin case protrudes excessively.
The bobbin thread tension is often adjusted, and sharp notches appear on the head of the screw. The lower thread, wrapping around the bobbin case, clings to them and breaks.
- The bobbin thread tension is too tight in the bobbin case.
- Notches on the edges of the bobbin.
The thread gets caught between the bobbin and the walls of the bobbin case and breaks. Change the bobbins as soon as the first nicks and chips appear.
- The edges of the bobbin are bent, there are gouges from the needle and notches.
3. Looping the lower and upper threads. bad line
The thread is not evenly wound on the spool and bobbin. Do not wind the thread on the bobbin by hand, use a special device for this. Even thread placement on the bobbin ensures the same even thread coming off. A hand-wound thread can be pinched by other turns and pull the upper thread more than it should. As a result, loops appear from below.
Dirt or lint, thread trimmings have fallen under the leaf spring of the bobbin case.
- A slot has formed under the leaf spring on the bobbin case. This happens after many years of intense operation of the sewing machine. Failures of the bobbin case should not be repaired by yourself, except for cleaning and adjusting the thread tension. The best solution for troubleshooting a bobbin case is to buy a new bobbin case.
- Weak tension on both threads.
- Strong tension on both threads.
4. Poor tissue advance
Weak foot pressure.
- The sole of the foot is skewed and does not press the entire surface of the fabric.
- Rack teeth are dull.
- is set to embroidery mode or the teeth of the feed dog are too low and do not hook the fabric well. The correct position of the teeth when sewing medium thickness fabrics: when the feed dog is raised from the needle plate to the maximum, the teeth should be fully raised, but not higher than the height of the teeth. Too high of their position will form a "fit" of the fabric or pull it together.
5. Causes of needle breakage
The needle number does not match the thread number or fabric thickness.
- The needle is bent.
- The needle is not fully inserted into the needle bar.
- The needle does not pass through the center of the needle hole in the plate. The needle must pass exactly in the center of the hole in the needle plate. Make sure that the needle does not touch the feed dog while operating the sewing machine. An incorrect needle position may be caused by a bent needle bar.
- The needle bar is set too low or too high.
- Wrong sewing. While sewing, do not pull the fabric with your hand, find the reason why the machine does not feed the fabric well. Adjust the presser foot pressure on the fabric.
6. Skipped stitches
The needle is too high when meeting with the nose of the hook, and it does not catch the needle loop. See Chaika sewing machine hook operation setting.
- The needle is bent or the point of the needle is dull.
A curved needle can be determined in the light by twisting it on a flat and dark plane.
- The needle is not set as far as it will go, or the wrong way round.
- Using a different type of needle for this sewing machine. Often, industrial-style needles are used in household sewing machines. They do not have a saw cut on the flask and are absolutely not intended for such machines.
- The settings for the interaction of the needle and the hook have been misadjusted.
In this video, you will find out the reason for the costly sewing machine repair caused by a broken toothed drive belt. You will also learn recommendations on how to avoid this breakdown of the sewing machine.
If the foot drive, one might say, is a complete antique, then the hand drive can be used, especially for beginners to learn to sew. To learn how to repair this device yourself, read this article.
The main malfunctions and malfunctions of these sewing machines, as a rule, are not related to its adjustment. Sometimes it is enough to set the needle correctly, replace low-quality threads, select the correct tension of the lower and upper threads and the machine will work perfectly again.
Breakage of the needle at the sewing machine is a sign that it requires "serious" adjustment, adjustment. But, often, setting up the sewing machine is not required, it is enough to stop pulling the fabric while sewing. The second common cause of needle breakage is sewing thick fabrics that are not intended for sewing on this model of sewing machine.
Skips occur due to the fact that the nose of the shuttle "meeting" with the needle does not capture the upper thread from it. Either it is located far from the needle (large gap), or the loop of the upper thread is formed too early or late, or too small. That's all the reasons, simple, isn't it? It remains only to find out why this happens and how to fix these malfunctions.
The line winds, which means that the upper thread "slows down" during the movement and its excess appears. There are many reasons for this, ranging from the uneven thickness of the thread itself, ending with the shuttle. Start by carefully following the path of the thread. Perhaps she just clings to the small notch of the thread guide.
Rarely, but sometimes you can find machines with a foot drive. The best solution instead of repairing the drive, install an electric drive on the machine. This is done quite simply and anyone who has a screwdriver can install it with their own hands. But, if you need recommendations on how to repair, adjust the foot drive, this article is at your service.
Malfunctions and malfunctions of the sewing machine it will be easier to eliminate if you understand how the sewing machine works, and what part is used for what. Study carefully the device of your typewriter according to the instructions or using our article.
The machine must be lubricated at least once a year. But do not fill it with plenty of oil. Oil tends to dry out over time, and the resulting clots of dried oil can cause some sewing machine malfunctions.
The bobbin is the very inconspicuous detail that no one pays attention to. And it is she who is the cause of many malfunctions and malfunctions of the sewing machine. You can disassemble the entire machine without finding the reason for the "winding" of the line. And it is worth replacing the bobbin with a new, smooth and light one, and the line will be even and beautiful.
A sewing machine needs lubrication like oil for your machine's engine. But we take care of the car and wash it with shampoo almost every week. Why not then wipe the body of the sewing machine from dust, brush its internal mechanisms with a brush so that they are clean and dry, without traces of oil and lint from the threads.
