How often does Xuanyi throttle clean?

Xuanyi throttle is recommended to be cleaned every 20,000 kilometers. Function of throttle valve: 1. Throttle is a control valve that controls air to enter the engine. After the gas enters the intake pipe, it is mixed with gasoline to form a combustible mixture, which is burned to do work; 2. It connects the air filter and the engine block, and is called the throat of the automobile engine. If the throttle four-stroke gasoline engine is roughly like this; 3. Throttle is one of the most important components in computer engine system. Its upper part is the air grid of the air filter, and the lower part is the engine body, which is the throat of the automobile engine.