It is necessary to carefully check whether the suture is worn correctly. If it is not correct, it will cause problems such as line throwing and disconnection.

After finishing the work every day, clean up the dust cloth (teeth and feeding components). If the thread is not cleaned for a long time, there will be too much wool, which will cause stitches, thread breakage, thread trimming and other faults.

If you find that there is a winding in the bottom thread cam, do not use sharp tools to clean it, otherwise the bottom thread cam will be damaged and the bottom thread will be broken.

Before working every day, check whether the oil window on the top of the machine can spray oil normally, and also check whether the oil level line at the bottom of the machine is below the bottom line. Otherwise it will cause the machine to become hot, wear, or jam.