Overview of throttle line
Both lines of the motorcycle lead to the throttle handle on the right of the handlebar, and the one on the top is the throttle line, which is responsible for controlling the throttle valve and the oil needle, that is, controlling the throttle.
The line next to it is the accelerator pump line. When the accelerator is tightened sharply, the carburetor can spray a stream of oil into the throat to improve the acceleration during rapid acceleration. This accelerator pump only works when the accelerator is tightened sharply. It does not work when the accelerator is tightened normally or slowly. Vehicles equipped with this type of carburetor should pay attention not to tighten the accelerator when parking, otherwise, gasoline will be injected into the cylinder, causing flooding and waste of gasoline.