Where is the drain switch of the Besturn B50 located?

[McJonathan]

The drain switch of the Besturn B50 is located at the bottom of the radiator. Avoid contact with acids and alkalis: The radiator should not come into contact with any acids, alkalis, or other corrosive substances. Use soft water: It is recommended to use soft water. If hard water is used, it should be softened first to avoid internal clogging and scale buildup in the radiator. Use standard antifreeze: When using antifreeze, always choose a long-lasting rust-proof antifreeze produced by reputable manufacturers and compliant with national standards to prevent radiator corrosion. Regularly check the water level: During daily use, regularly check the water level and shut down the engine to cool it before adding water. When adding water, open the radiator cap slowly and keep your body as far away as possible from the filler neck to avoid burns from high-pressure steam that may escape.