The protective cover on the fuselage should be kept intact and sealed to prevent dust from entering and contaminating the oil. When the new machine is used for half a year, it should be replaced with new oil. At the same time, the fuel tank should be cleaned with oil filter. After that, the new oil should be replaced every year. ; Keep the exposed parts of the swing arm shaft clean and lubricated. The die is an important process equipment for the cutting machine and must be used and stored correctly.