How to repair the broken thread of flat car sewing machine

It may be line fault, improper adjustment and improper line selection, which should be carefully analyzed according to actual problems.

Check the wiring. First of all, you need to check whether the wiring is firmly connected, whether the wiring is worn or cut, and if it is damaged, you need to replace it with a new one.

Re-adjust the pressure, the sewing machine needs to pull the wire during sewing. The greater the pressure, the thread will be pulled and the strength of the thread will increase. Adjusting the pressure of the wire can solve the problem of broken wire.

Adjustment of tightness, tightness adjustment is the key to affect sewing effect and linear tension. Too tight or too loose thread tightness may lead to thread breakage, so pay attention to adjusting thread tightness and conduct simple tests. If it is found that the wire is too thin or too thick, it is necessary to replace the appropriate wire, for example, you can choose a soft and suitable wire.

Sewing machine maintenance:

After the work is completed, insert the needle into the pinhole plate, lift the presser foot, and cover the machine head with a hood to prevent dust from invading. When you start work, first check the main parts, how hard you step, whether there is any special sound, whether the needle is normal, etc. If abnormal phenomena are found, they should be repaired in time.

The machine has been used for a long time and should be overhauled. If worn parts are found, replace them with new ones. In addition, when using sewing machines, we should not only pay attention to maintenance, but also clean them regularly.

In the whole sewing machine, the shuttle bed is the most sensitive place, and of course it is also the most prone to failure. It should be cleaned and oiled from time to time to keep its work smoother.

When not in use, be sure to cover it with a piece of cloth or a special sewing machine, which also reduces the speed of it getting dirty and brings great convenience to everyone.