What is the diameter of the throttle clamp?

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful.

Throttle has no fixed replacement mileage or service life. Whenever the throttle valve is broken, it should be replaced. After long-term use, there will be carbon deposits on the back of the throttle.