Gas–Petrol Carburetor Switch (Dual-Fuel Switch):

Gas carburetor switch is a control device used in a dual-fuel engine to change the fuel supply from petrol (gasoline) to gas (such as LPG or natural gas), or vice versa. It directs which fuel enters the carburetor or mixer for combustion. Simple explanation: It’s a switch that lets the engine run on either petrol or gas by selecting one fuel source at a time. How it works: In petrol mode → the switch allows gasoline to flow into the carburetor In gas mode → it shuts off petrol and allows gas to flow into the engine through a gas mixer or modified carburetor