The top priority of chain saw maintenance is the saw chain. A properly maintained and sharpened saw chain can be easily cut into wood with little pressure. During daily maintenance, pay attention to check whether there are cracks and broken rivets on the chain links of the saw chain. Replace any damaged or worn parts on the saw chain, and then match new parts with the same shape and size as the original. Carbide saw chains are particularly resistant to wear.

The sharpening of the saw chain can usually be done by a service dealer. The serration angle must be maintained when sharpening. The angles of all saw teeth must be the same. If they are different, the saw will not turn smoothly and will wear severely until the saw chain breaks. The length of all saw teeth must also be the same. If they are different, the tooth height will be different, which will also cause the saw chain to rotate unevenly and eventually break. After sharpening, clean the chain thoroughly, clean the files or dust attached to it, and lubricate the chain. If it is not used for a long time, ensure that the saw chain is stored in a well-lubricated state.

For long-term storage of the chain saw, empty the fuel tank and clean it in a well-ventilated place. Always run the engine before the carburetor dries to prevent the carburetor diaphragms from sticking together. Remove the saw chain and guide plate, clean, and then spray anti-rust oil. Thoroughly clean the tools, especially the cylinder cooling fins and air filters. If using bio-saw chain lubricant, fill the lubricant tank.

It should be noted that even if the chain saw is used and maintained as required, some parts of the power tool will have normal wear and tear, so it must be replaced in time according to the model and usage of the parts. These parts include: saw chain, guide plate, transmission parts (clutch, clutch drum, sprocket), filter, starting device, spark plug and vibration damping system parts.