Three months. Sanyang Jiumei z300 is a domestic scooter with great power and high value, which is deeply loved by riders. Its maintenance cycle is generally three months. The main maintenance items are to change the lubricating oil regularly, check the tire pressure and chain tightness, and properly clean the air filter and vehicle capacity. Generally, the engine oil and chain lubricating oil of this car are usually consumed once every three months after filling up, so it needs to be replenished in time, and some maintenance projects will be done together by the way.