Finding out, or at least seeing a photo of how a modern sewing machine works, is not only informative, but also useful. Be sure to read this series of articles on renovating modern household sewing machines... A visual representation of the sewing machine device will help you make right choice when buying it, and also make you take care of it later.
It is quite difficult to disassemble a modern sewing machine on your own, but in most cases you will not have to do this. But still, there are cases when you have to disassemble the sewing machine yourself. For example, when you need to replace an electric drive, a line does not form, a needle breaks, etc., and there is no way to go to a workshop, because your city or village simply does not have one.
In this article, you will learn how to properly disassemble (remove) the plastic covers of a modern household sewing machine of the usual inexpensive model from Brother, Janome and any other company.
Almost all models of modern household machines of economy class are assembled in China and therefore in order to disconnect the plastic parts of the case you only need "Phillips" screwdrivers. One screwdriver should have a Phillips head for medium-sized screws and one slightly more powerful, maybe even a flat head.
Screws for machines of European assembly (sometimes Taiwanese) often have some peculiarity. They can only be unscrewed with a special screwdriver (asterisk) with a special slot. First, look at what kind of screwdriver you can use to unscrew the housing mount, you may have to buy it from the store specifically for this.
This photo shows the types of modern screwdrivers and screws. By the way, we will disassemble the sewing machine in the foreground. It is called "Dragonfly" - China. Its body is assembled on ordinary cross-shaped screws.
Remove all non-tooling parts first. Start at the removable table, then detach the foot. Remove the stitch plate. To do this, use a flat screwdriver to unscrew only one screw (sometimes two). Naturally, you need to remove the bobbin and the plastic hook or bobbin case, remove the bobbin and so as not to injure yourself, it will not hurt to remove the needle.
Now you need to unscrew the screw indicated by the arrow in the photo and carefully remove the front cover. There is a special latch at the top of the cover, you need to disconnect it before "pulling out" it by force.
All screws do not need to be stacked together. When you start assembling back, it will be difficult for you to determine which screw and where it was. Therefore, mark them in any way convenient for you. For example, you can put a piece of paper with a mark next to each screw (s).
Now we will begin to disassemble the sewing machine, or rather to disconnect its plastic case, which consists of two halves. But first remove the hook cover. To do this, unscrew the screws indicated by the arrows. Just like the front cover, this part, in addition to screws, is also attached to latches. To loosen them, you need to insert a screwdriver into the slot and try to gently slide the cover to the left. WITH back side where the handwheel is located, remove the pattern selection knob. Just pull it firmly to the right. Immediately notice how it stood to make it easier to install it back.
And two more types of attachments are located at the bottom of the machine body. In many models of sewing machines, the rubber feet in the lower part of the body are at the same time attaching the plastic body to the metal bed of the sewing machine. In any case, this model of the machine has two rear legs as such an attachment. But since we will only be removing the front part of the case, unscrew only one leg (top right).
For all sewing machines of this class, it is imperative to release the fastener indicated in the photo with the letter (A). Moreover, both screws do not need to be unscrewed, it is enough to release only the cover front side... In this case, you need to unscrew the top screw.
The very last, but most inconspicuous screw (B) remains. It is located in the depths of the front of the machine. Even at high magnification, it is not visible in the photo. The screw that you can see so clearly does not need to be unscrewed. This is the upper thread tensioner attachment. By the way, it remains in place after removing the cover. Consider this point and do not try to shoot it. Actually, it is not difficult to unscrew the screw itself, it will be much more difficult to put it back. Therefore, hold the screwdriver on the magnet for a while, this will help you later.
Now you can remove the front cover, although it should be noted that other models may have an additional mount, but the principle is about the same. Look carefully, maybe your machine will have an additional mount at the bottom of the case. It happens that the fastening of the covers is hidden by plugs. Use a knife blade to pry the plug on the back of the machine and make sure there is no additional attachment there.
By the way, it is with the help of a knife that you will have to remove the cover, since in addition to screws, there are latches on the ends of the covers. Place the knife blade between the ladles of the case and gently try to move them apart by displacing the latches. Only now it is difficult to determine at once where they are located, so please be patient if you really decided that you definitely need to disassemble the sewing machine.
This is approximately the "picture" you will see when you can disassemble your sewing machine. Probably, it should be noted that the most difficult thing is not to find all the screws holding the covers to the case and to each other. It is very difficult to carefully remove the covers, to separate their latches. If you do it hastily, you can damage the plastic, which will ruin not only appearance machines, but it will also interfere with work. Rough spots in the sleeve area of the machine will cling to fabrics and even form puffs.
It is important to firmly decide whether you need to disassemble the machine with your own hands or not. If there is no other option, then be patient and attentive. Well, for what it is necessary to disassemble it, we have already mentioned above, but we will understand it in more detail in other articles.
How a modern household electric sewing machine works. Major malfunctions of components and mechanisms.
Sometimes it becomes necessary to disassemble the sewing machine, or rather to remove the plastic case of the machine in order to gain access to some units. Such a need arises very rarely and it arises only when it is necessary to replace the electric motor of the sewing machine or the drive belt.
Just like the pedal, the electric motor does not need to be repaired by yourself. Moreover, there is nothing to repair there. The engine is either running or not running. If it does not work, and you know for sure that there is no other reason for this, then it needs to be replaced.
Such a "trifle" as winding a thread on a bobbin often creates a lot of inconvenience. For some reason, it is not always possible to do this quickly and "without problems". Let's see why it is sometimes difficult to wind the thread on a bobbin and what needs to be done to eliminate minor damage to the winder.
The opinion of the master about which sewing machine is the best. Details about the used Rubin sewing machine and other old models of the Veritas brand.
Sometimes, you need to remove the overlock covers and lubricate all rubbing parts inside the case. What you need to pay attention to and how to do it yourself.
The uninterrupted operation of the sewing machine depends on how correctly and on time the lubrication will be carried out. Certain parts of the machine can be lubricated without dismantling. Still, some parts cannot be lubricated unless disassembled. Before this, the owner needs to understand whether he can independently lubricate. If he is not completely confident in his technical abilities, then it is best to take the machine to a repair shop or call a foreman at home.
Special screwdrivers and operating instructions. If you are confident, then you need to read the instructions on how to disassemble the sewing machine "Janome". After careful reading, you can proceed to the action step by step using the screwdrivers that are included in the package. If they are lost, then you need to find the package bundle sheet and find out what screwdrivers are needed. After purchasing them, you can carefully proceed to disassembly.
Special machine oil and operating instructions are a must-have when disassembling the machine. After disassembly, you need to read the part of the manual that deals with lubrication and figure out how to lubricate the Janome sewing machine. If everything is clear, then you can start lubrication according to the illustrations and step by step... It needs to be produced only with special oil, which should be included in the kit. If it is not there or it is over, you need to purchase exactly the same.
It is also worth mentioning how to thread the Janome sewing machine correctly so that you do not have to disassemble it later. It is completely easy if you have instructions and high-quality sewing threads. Self-disassembly of the sewing machine to remove heavily entangled thread is quite simple to carry out. To do this, according to the illustrations and tips, the bobbin part is gradually disassembled and assembled in the reverse order.
You also need to know how to set up the Janome sewing machine correctly, so as not to overload it in working mode and not bring it to disassembly and repair. If the machine stops sewing at some point, tears the thread, and the lubrication does not give any results, you can disassemble the sewing mechanism. But only if the machine's warranty has expired. Any intervention and disassembly of the mechanism, except for the bobbin part, may void the warranty.
How much the owner likes disassembly of equipment depends on how to choose the right sewing machine "Janome". If the owner is a supporter self repair, then he should choose a simpler model, which will be easier to disassemble and assemble. In general, you can disassemble anything on your own. It is quite another matter to collect. Therefore, at serious breakdowns it is better to trust the technician to professionals, and not to experiment.
The sewing machine is the main working tool of the needlewoman. In order for it to serve for a long time and not cause trouble in operation, it is necessary to carry out the adjustment, cleaning and lubrication procedure in a timely manner. This is usually done according to the attached instructions, which must always be kept near the device. After that, all the parts begin to function more harmoniously, and the workflow is enjoyable. All the subtleties and nuances of how to lubricate a Janome sewing machine are presented below.
If the sewing machine is not cleaned and lubricated in a timely manner, it may fail. Namely:
To prevent this from happening, you need to know how and where to properly lubricate your Janome sewing machine.
This is necessary for:
To carry out the procedure at home, you will need:
For the lubrication procedure, no oil other than machine oil must be used! First you need to pre-prepare the sewing machine. For this:
Important! If the unit has not been used, it should be stored under a hood or cover.
Let's consider an algorithm on how to lubricate a Janome sewing machine. The work must be guided by the instruction manual.
Step by step algorithm:
A common mistake is to apply as much oil as possible. In fact, this is not the case. During operation, dust accumulates inside the device, which gets there along with the cloth. For this reason, there may be problems with the advancement of the web. Contamination creates additional stress on the device drive. A large amount of oil applied during the care, contributes to the accumulation of dust, threads, scraps of fabric. Forming lumps, the mass accumulates in a certain place, which leads to congestion and malfunctions.
The famous Japanese brand Janome is famous for its excellent quality. There are more than 300 models of sewing machines alone. About a hundred countries have valid contracts for the supply of Janome sewing machines.
This indicator can be used to judge the quality of the manufactured products. Every day, thousands of machines leave the conveyors of enterprises, and the stable demand for them confirms the amazing manufacturability and functionality of the devices. In addition to ready-made machines, the enterprises also produce spare parts for Janome sewing machines, including even.
Like all Japanese equipment, sewing machines of this brand are very reliable and of high quality in terms of manufacturing. However, breakdowns happen to them as well. The main reasons for these are negligence in the performance of work and lack of proper care.
Even the best equipment can be rendered unusable without providing it with proper operating conditions. Below we will consider typical breakdowns at which it becomes necessary to repair Janome's sewing machines.
Any technique needs care. This fully applies to sewing machines. With constant work, regular preventive maintenance is also required.
If you begin to notice that the machine begins to malfunction, make noise, skip stitches, sew unevenly or give out some other surprises, then this indicates the need for cleaning and subsequent lubrication. It is also possible that the device requires adjustment.
It is often necessary to adjust the thread tension. In machines of this class (like) such an operation can be performed without difficulty.
If work is not expected in the near future, then the machine can be stored. Before doing this, the Janome sewing machine must be cleaned from dust and lubricated.
Any preventive cleaning and lubrication is accompanied by the removal of the shuttle. After that, using a special brush, all rubbing surfaces are cleaned from lint and tissue remnants. Oil is poured into the technological holes. Rubbing parts are also lubricated.
The lubrication points are indicated in the instructions for the specific model. It is advisable to lubricate the product no more than once a month, as excessive lubrication can contribute to the opposite effect. Remaining grease must be wiped off with a dry cloth.
After that, the shuttle is installed in place, and the final assembly of the machine. If such work is beyond your strength, but in your locality there is service center sewing machines Janome or simply repairing sewing machines, you can apply for a service there. Otherwise, such preventive measures will have to be performed independently.
Store the sewing machine only in heated rooms with normal humidity. It is unacceptable to leave it in the basement, garage or other premises in the absence of heating.
And do not forget, if you are for a sewing machine, then you also need to diagnose it for malfunctions regularly.
19 May 2011
2. Close the protective cover, lift the handle and remove the screw to the left of the handle.
3. To remove the cover, press the latch inward at the base of the handle and remove the cover along with the handle.
2. Remove the screws from the bottom of the machine A and B... Screw B the smaller of the 2 screws located there.
3. Position the machine upright and remove the plug from the side cover below the flywheel using a small screwdriver.
4. Unscrew the screw WITH.
1. After checking the relative position of the parts, look at the upper shaft from the side of the right support, between the support and the shaft stop washer. Check if there is any darkening, seizure of the shaft. If there is discoloration, the shaft and bearing bush must be replaced.
2. Loosen the set screw on the left end of the upper shaft. Try to slide the shaft from left to right. If the shaft does not move, it also indicates that the shaft and sleeve must be replaced.
1. To begin the shaft replacement procedure, place the upper counterweight shaft in front of you to access the locking screw and the positioning washer screw. Note that the single tab on the positioning washer is on the right (remember position). Remove the retaining screw and the positioning washer screw.
3. Remove the screws A and V.
4. Remove the thread drive unit (thread take-up unit) and place it behind the machine.
6. Using a hammer and a 3.0 mm core drill, remove the pin from the counterweight.
7. Arrange impact screwdriver or a core at the end of the upper shaft in the counterweight (see inset). Knock out the shaft to the right about 1.5 cm.
10. Remove the upper shaft. Remove and set aside the retainer, retainer screw, positioning washer and its screw.
11. Use a small screwdriver to knock out the upper shaft bushing towards the inside of the machine using a light impact. Be careful not to damage the molded parts of the seats when doing this.
12. Install new bushings, install the bushings with the rounded end in the bore ...
13. ... make sure the sleeve is flush with the molded seat.
14. Remove the retainer, bushing and counterweight to the new shaft.
15. Remove the flywheel by pulling it out.
17. Remove the balance wheel and metal and plastic washers.
18. Remove the belt pulley by turning it clockwise and pulling it out.
19. Remove the clutch springs from either end of the shaft ( A) or belt pulley ( B) rotating clockwise and pulling out.
20. Use a 2.5mm screwdriver or hexagon to pry out the upper camshaft camshaft pin and remove the camshaft pulley, washers and bushing.
22. Remove the shaft from the ring coupling. Use an impact screwdriver ...
23. Install the pulley onto the new shaft using a 1.5mm hex screwdriver.
24. Install the gland washers, clutch bushing and ring clutch with right side shaft.
25. Hold the clutch sleeve with a 2.5mm hex screwdriver and position it so the sleeve moves no more than 0.5mm from left to right. Then tighten the 2 clutch screws.
26. Install the clutch springs inside the clutch sleeve by rotating the springs clockwise. The spring must be installed in the groove in the clutch sleeve.
27. Install the belt pulley, turning it clockwise until it stops.
28. Install the plastic washer after the metal. Install the balancing wheel with the flat side against the belt pulley.
30. Install the flywheel, making sure the tabs on the flywheel fit into the grooves on the balance wheel.
31. Insert the left end of the upper shaft through the belt into the seat bushing.
32. Thread the end of the upper shaft through the positioning washer, clamp, oil seal, and counterweight. Remember that the single tab on the positioning washer must be on the right.
34. Move the release lever towards the front of the machine to protect it from impact from the clutch sleeve.
35. Place the pin against the counterweight through the shaft (a 1.5mm hex screwdriver can be used for impact). If the pin does not go through the shaft, remove the pin, rotate the shaft 180 degrees and reinstall the pin.
36. Position the machine with the counterweight forward. Move the shaft to the right, slide the retainer to the left, and tighten the retainer screw.
37. Position the positioning washer so that it has a single tab to the right and up. Install the washer and screw, and move the positioning washer to the right or left so that the petals pass through the sensor without hitting it. Tighten the screw.
38. Install the winder with the screw. Make sure the end of the spring fits into the casting hole as shown.
41. Place the white thread guide between the two black parts of the thread holder.
42. Secure the thread drive unit with screws A and B.
1. Remove the foot, needle and bobbin cap plate. Loosen the 2 screws on the lower drive pulley shaft (2.5 mm).
2. Before adjusting the hook, make sure the presser foot is in the down position. Insert the needle to the left.
3. Adjust the hook and needle so that the point of the hook is about 1 mm above the needle needle in the left needle position.
4. Tighten the 2 screws on the lower drive pulley shaft (2.5 mm).
5. Install the bobbin case, throat plate and foot. Plug in the power cord and turn on the machine. Select a Zig Zag stitch (stitch # 8). Turn the handwheel to swing the needle to the right and left. The needle should be 7.8 to 8.2 mm above the surface of the throat plate when rolling.
6. As a reference point, the needle should swing at the level of the presser foot when the foot is in the raised position.
7. To adjust, loosen the upper shaft positioning washer screw.
8. Turn the positioning washer in direction A if the needle deflects more than 8.2 mm above the throat plate and in direction B if the needle tip is less than 7.8 mm above the throat plate. Tighten the screw.
3. Install screws A and B on the bottom of the machine. Screw B is the smaller of the 2 screws located there.
1. To install the cover, press inward at the base of the handle and install the cover together with the handle.
Good luck with the repair!
All the best, writeto © 2011
