Patent ID: 7603978

Claim:
A tandem valve type throttle body for a two-wheeled vehicle with the structure that an intake passage is provided through in an inner portion of the throttle body, a main throttle valve and a sub throttle valve are provided within said intake passage, the main throttle valve opens and closes the intake passage in accordance with an accelerator grip operation by a driver, the sub throttle valve is arranged in the intake passage at an upstream side from said main throttle valve and operated by an electric motor driven in correspondence to an operating state of an engine so as to open and close the intake passage, a cam lever is attached to one end of a sub throttle shaft to which said sub throttle valve is attached, said cam lever is arranged so as to be brought into contact with a driven lever attached to one end of a main shaft to which the main throttle valve is attached, and the main throttle valve is opened at a fixed opening degree in correspondence to an opening degree of the sub throttle valve, wherein a throttle cover is integrally formed at one side wall of the throttle body so as to surround the driven lever and the cam lever and be open toward one side direction with an opening portion, and wherein a lever storage chamber is formed by closing the opening portion of said throttle cover with a closing cover, and said driven lever and the cam lever are arranged so as to be stored within the lever storage chamber.