How often does Wuling throttle clean?

How often is the Wuling throttle valve cleaned? The following is my personal opinion:

Wuling throttle shall be cleaned every 20,000-40,000 km. Precautions for using the throttle are as follows: 1. Be sure to clean the throttle. Too much throttle sludge will cause insufficient engine power and increase fuel consumption; 2. Oil the fixed metal beam ring before disassembly, so as to prevent the teeth from slipping; 3. After cleaning, keeping the throttle opening before cleaning will lead to excessive air intake, which will make the engine shake and accelerate weakly when starting. The front suspension of Wuling Guang Zhi is McPherson independent suspension, and the rear suspension is vertical leaf spring. Equipped with 1.2l naturally aspirated engine, the maximum power is 56kw, and the maximum torque is 108nm, matching with a 5-speed manual transmission.