How often does Ruifeng S2 throttle clean?

Wind s2 generally recommends checking or cleaning the throttle every 20,000 kilometers. Throttle is a controllable valve that controls air to enter the engine. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. It connects the air filter and the engine block, and is called the throat of the automobile engine. The throttle valve belongs to the intake area. At present, the piston of the engine works asynchronously. When the engine is turned off, the intake valves of some cylinders cannot be completely closed, and some unburned fuel will continue to vaporize and oxidize, producing some carbon deposits in the intake pipe, especially behind the throttle. On the one hand, these carbon deposits will block the idle channel, make the throttle stuck or exceed its adjustment range, and affect the intake effect and the quality of mixture, thus causing idle jitter, poor speed increase, flameout and fuel consumption.