How often does the throttle of Ruifeng S5 need to be cleaned?

The throttle of Ruifeng S5 is cleaned every 20,000 kilometers or so. Throttle is a controllable valve that controls air to enter the engine. There are two kinds of traditional pull-wire throttle and electronic throttle, which are connected with air filter and engine block respectively, and are called the throat of automobile engine. Ruifeng S5 is a compact SUV launched by JAC. Its length, width and height are 4475mm, 1840mm and 1680mm respectively, and its wheelbase is 2645 mm. It is equipped with 1.5T turbocharged engine and 2.0L naturally aspirated engine, matching with 6-speed manual transmission, 5-speed automatic manual transmission and 6-speed dual-clutch transmission.