Second, the maintenance of sewing machines should also note the following:
1. After work, the needle into the pinhole plate, lift the presser foot, but also cover the machine head machine to prevent dust intrusion.
2. At the beginning of work, first check the main parts, how to set the light weight, whether there is any special sound, the needle is normal, etc., if found abnormal, should be timely maintenance.
3. After using the machine for a long time, make an overhaul, if found wear larger parts, to replace the new.