Seven Problems And Solutions of Sewing Machine

In the process of using the sewing machine, there are many small faults that can be solved by itself. There is no need to ask the master to pay for it. About the problems of sewing machine, the following are a few common glitches summarized by the maintenance master, which analyze the causes of the breakdown in detail and the solutions.

1. Sudden stop during sewing; the power indicator light is on, but the handwheel is stagnant.

Possible cause: the sewing machine has been working at a low speed for a long time; overheating of the machine may cause the motor power to turn off automatically.

Solution: turn off the power and wait for 20 minutes, the safety device will restart, and the sewing machine is ready to start working.

2. No needle movement

Cause: the upper thread is used up; the presser foot is not lowered; the bobbin thread is not in the correct position.

Solution: replace the empty spool and re-identify the needle; lower the presser foot; press the shuttle spool to the end and return to the left; lower the eyelet lever.

3. The sewing machine wants to stop

Cause: the presser foot does not match or the needle hits the presser foot; the needle comes off and gets caught in the crochet needle.

Solution: replace the presser foot; remove the needle and install a new needle.

4. The upper line is broken

Reasons: improper threading method; thread knotting; excessive thread tension; bent, blunt tip or trachoma of the needle; incorrect needle size; incorrect needle placement; improper needle and thread cooperation; excessive initial sewing speed; Line device.

Solution: re-enter the line normally; eliminate the knots on the line; adjust the tension of the thread clamp; replace the needle; replace the needle of the appropriate model; properly set the needle; change the thread or the needle; start the sewing machine at medium speed;

5. Bottom line broken

Cause: the bobbin is not completely inserted into the bobbin case; the bobbin is entangled with the thread; the bobbin does not run smoothly in the bobbin case; there is yarn in or on the bobbin case.

Solution: carefully reinstall the bobbin into the bobbin case; arrange the bobbin case to exit the thread; check the bobbin may be damaged; clean the bobbin case and bobbin.

6. Jumper

Reasons: the thread tension is too high; the needle is bent or dull; the needle size is incorrect; the needle and thread are not properly matched; the thread has not passed through the thread take-up lever; the sewing machine presser foot pressure is insufficient; the needle is not properly set.

Solution: adjust the thread tension; replace the needle; select the appropriate type of needle; replace the needle or use the thread; check the threading steps; increase the pressure of the sewing machine foot;

7. Stitches are not satisfactory

Reasons: this problems of sewing machine thread is not fully pulled into the sensor; the threading method is incorrect; the bobbin case is out of thread; the spool cap size is incorrect.

Solution: fully pull the thread into the sensor; correctly thread the thread; correct the bobbin case outlet; use a bobbin cap that matches the size.

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