When the sewing machine breaks the upper thread

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For a long time your sewing machine worked properly, but one day you notice that the upper thread breaks. There may be several reasons why this happens, but this does not mean that you cannot cope without outside intervention.

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  • 9 plates Faults of the bobbin case
  • 10 Breakage of the shuttle
  • 11 Why the thread breaks in the typewriter( video)
  • Faultsconical spring or tension adjuster

    The thread may be pinched by a conical spring;in this case it is enough to loosen the nut on the regulator. If the part is assembled incorrectly after repair, it should be completely disassembled and re-assembled.

    If the taper spring is installed incorrectly, you need to remove the pressure nut, rotate the spring 180 ° clockwise, and then set the nut in its original place.

    If the conical spring of the axis of the regulator is wedged, part the ends of the axis of the regulator and straighten the upper turn of the conical spring so that the upper thread can move freely.

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    Using the tension adjuster you can loosen the thread

    Poor quality thread, the formation of loops or knots

    Sometimes loops are formed because the thread is loose. It breaks, as the hook of the sewing machine pulls it into the shuttle groove. To eliminate the problem, tighten the control nut on the tension regulator.

    If the thread is twisted in the regulator and breaks - then you need to replace it with a new high-quality upper thread. Remember that you should not sew low-quality threads with knots. When you find something like this, always change a bad sewing thread to one where there is no visible damage.

    Problems with the pusher

    Sometimes, when self-unassembling and disassembling a sewing machine, the plunger is simply not installed. You will have to return the old pusher or make a new one, but of exactly the same size.

    If installed incorrectly, the flattened end of the part is directed towards the lever, and this leads to the fact that the thread begins to break. It is necessary to disassemble and install the pusher correctly.

    Incorrect setting of the needle or pinching the thread during sewing

    First of all, do not forget that in any brand of sewing machine the needle is placed with a long groove towards the location of the thread guide.

    If you pinch the thread while sewing, first find the place where the clip is directly attached, and eliminate the cause with abrasive paper or file files.

    If the needle is installed correctly, the thread will pass freely in it

    Faults of the pull-off washer

    If the pull-up washer is locked with a pressure nut, this means you need to use a part of a slightly larger diameter, reduce the side of the washer using a needle file or install a pull-out washer without a side.

    If there is no spin or washer and when the thread of the sewing machine breaks, you need to install a squeeze washer of the appropriate size. In a pinch, try using copper wire about 1 millimeter in diameter.

    Needle Problems

    If the material is thick or very durable, the thread will break because the force of the gap due to friction will be greater than the safety margin. You need to always correctly correlate the size of the needles with the thickness and density of the material being processed.

    When the edges of the needle needles are extremely sharp, they cut the thread, not allowing it to work. Replace the wrong needle with a quality one.

    Breakage of the compensation spring

    If it is missing, the thread sometimes just loops, but it often breaks. The problem is solved by installing a compensation spring.

    With a strong tension of the compensation spring, adjust its tension.

    Faults of the foot and needle plate

    With prolonged use of the sewing machine, frequent needle strokes form notches, which sooner or later begin to break the thread. It is necessary to center the needle correctly and use the file to cut off the notches on it. And in any case, do not use curved needles.

    If the hole in the needle plate is rough due to irregularities, apply the hacksaw blade and file file.

    It is important to monitor the state of the needle and tab. The output will be the replacement of the latch or the elimination of the prong with, for example, pliers.

    If there is a misalignment or mismatch in the size of the bobbin case screw, it is best to replace it. In extreme cases, you can try to grind out the protruding part of the file.

    If the handle of the bobbin case latch is pushed out, the thread touches the handle of the latch and breaks. In order to eliminate this malfunction, you need to shorten the handle or cut down a part of the screw of the latch.

    If there is no gap between the shaft and the latch of the cap, replace the handle or cut the latch with a round file.

    Breakdown of the Shuttle

    If the part was installed incorrectly at the factory, set the hook correctly - so that the sewing machine performs the functions assigned to it.

    With a low position of the pusher relative to the shuttle, disassemble the sewing machine assembly and place a threaded sleeve ring under the pusher.

    . If there is an inconsistency in the movements between the needle and the hook, release the crank clamps, set it in the correct position and lock into the body.

    The nose of the shuttle should be smooth, not rough. This is easy to achieve with sanding paper and a felt wheel.

    If there is a pothole on the shuttle pusher blows, you will need a diamond file to level the plane.

    Why a thread breaks in a typewriter( video)

    It is impossible to describe all possible breakdowns of sewing machines, if only because many models from manufacturers from different countries of the world are on the market. But if you spend a little time and make a little bit of effort, the repair will be quite easy and even fun.

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