Maintenance of sewing machines should also pay attention to the following points:
1. After the work, the machine needle into the pinhole plate, lift the foot, but also with the hood cover nose to prevent dust intrusion.
2. Start work, first check the main parts, step up the severity of the situation, there is no special sound, machine needle is normal and so on, such as abnormal phenomenon, should be timely maintenance.
3. After using the machine for a long time, a major overhaul, such as the discovery of large wear parts, to replace the new.