The Hero MotoCorp Vehicles are categorized in to three based on the function of Fuel Valve,
The three-way fuel valve is on the left side of the carburetor.
OFF - At "OFF" position fuel cannot flow from the tank to the carburetor. Turn the valve "OFF" whenever the two-wheeler is not in use.
ON -At "ON" position fuel will flow from fuel tank to the carburetor.
RES -At "RES" position fuel will flow from the reserve fuel supply to the carburetor. Use the reserve fuel only when the main supply is exhausted. Refill the tank as soon as possible after switching to "RES" position. The reserve fuel supply is specified as per our model.