The use of sewing machines to do the ground clean and lubricated to ensure that the machine run. A. The feed dog clean-up clean-up of the sewing machine (1) Remove the needle plate and send cloth between the teeth of the screw, remove the cloth, hair, dust, and add a small amount of sewing machine oil. (2) shuttle bed clean-up shuttle bed is the core of the work of the sewing machine, and also the most prone to failure, therefore, should regularly to remove dirt and add a small amount of sewing machine oil. (3) the surface of the clean-up of other parts of the sewing machine and all parts of the panel should be cleaned frequently. Two. The sewing machine lubrication must use a special sewing machine oil. Sewing machines used continuously for a day or a few days after the higher overall oil use between refueling, the machine idling a transfer time, so that the oil full infiltration and thrown off the excess oil, then clean with a soft cloth will head and countertops clean, to avoid smearing the seam material. And then threading stitch rags, sewing thread movement to wipe thrown off the excess traces of oil, until no traces of oil so far on the rags, and then formally sewing. Refueling site: (1) machine head lubrication on the axis of the hole, and on the axis of connected components. (2) panel internal parts and components to connect the moving parts. The lubrication pressure foot lever and the needle bar and its connected parts. (3) the lower parts of the machine board activities at the wipe and less add more oil. The filling hole fueling and refueling site does not have too much, one or two drops on the line. Secondly, the maintenance of the sewing machine should also note the following: 1. After the work is completed, the needle inserted into the pinhole plate, lift the presser foot, but also with the hood cover the nose, to dust debris intrusion. Two. When they start working, first check the main parts, how to step up the severity of the situation, with or without a special sound, Needle is normal, if found irregularities should be timely maintenance. 3. The machine uses quite a long time, to conduct a major overhaul, if found to wear a large part, to replace the new.