(1) Refueling parts: each oil hole on the machine head, lubricating the upper shaft and the parts connected to the upper shaft; the parts in the panel and the moving parts connected to each part; lubricating the presser foot bar and needle bar and the parts connected to them; the machine Wipe the movable part of the lower part of the plate clean and add less oil.
(2) Precautions for maintenance of the sewing machine: After the work is finished, insert the needle into the needle hole plate, lift the presser foot, and cover the machine head with the machine cover to prevent dust from entering; when starting to work, check the main machine first. parts, how heavy it is when you step on it, whether there is any special sound, whether the machine needle is normal, etc., if any abnormal phenomenon is found, it should be repaired in time; after the machine has been used for a long tim.
