Do not turn off the engine or refuel, as air will be present.
Gasoline generators are generally composed of stators, rotors, end covers, bearings and other components. The engine is a machine that converts chemical energy into mechanical energy. Its conversion process is actually the work cycle process, it burns the fuel in the cylinder to generate kinetic energy, which drives the piston of the engine cylinder to reciprocate. It drives the connecting rod connected to the piston and the crank connected to the connecting rod to reciprocate in a circular motion around the center of the crankshaft to produce power.