What is the reason why the carburetor of the grass trimmer cannot pump oil?

[AnnieLee]

It may be due to oil level control failure. The following is a related introduction to the carburetor: Introduction: The carburetor is a mechanical device that mixes a certain proportion of gasoline and air under the vacuum generated by the engine operation. As a precise mechanical device, the carburetor utilizes the kinetic energy of the incoming air flow to atomize the gasoline. Its important role in the engine can be referred to as the "heart" of the engine. A complete carburetor device should include a starting device, idle device, medium load device, full load device, and acceleration device. Function: It effectively provides the engine with a mixture of gasoline and air (theoretically the best ratio is 1:15). The performance of the engine is determined by itself, and the carburetor cannot improve the engine's inherent capabilities, but it can help the engine perform at 100% of its potential.