There is a coil in the flameout solenoid valve that generates a magnetic force when the power is turned on to pull the flameout switch back to the oil. When the power is off, there is no magnetism. The spring pushes the flameout device to the flameout position and no oil is supplied. The flameout solenoid valve can ensure that the engine is forced to flameout when the engine oil or inorganic oil pressure is low when the engine is running, and protects the engine from damage. Caution: It needs to be replaced and cleaned. The inside cannot be coated with lubricating oil, because the solenoid valve is close to the engine, and the lubricating oil is easily mixed with dust and evaporated into mud by the high temperature of the engine. When such a problem occurs, it can be manually pulled, fixed, or replaced with a wire pull, of course, it can also be cleaned or replaced