Air valve mechanism for two-cycle engine

A two-cycle internal combustion engine system comprising:

• a carburetor comprising an intake channel, a choke valve in the intake channel fixed to a pivotable choke valve shaft and a throttle valve in the intake channel fixed to a pivotable throttle valve shaft;
• an air channel in communication with fresh air and comprising an air valve fixed to a pivotable air valve shaft;
• a cylinder;
• a combustion chamber within the cylinder;
• a fuel port communicating the intake channel with the cylinder;
• an air port communicating the air channel with the cylinder;
• a piston arranged for reciprocating movement within the cylinder and comprising a transfer port for intermittently connecting the fuel port and air port with the combustion chamber;
• a throttle lever fixed to the throttle valve shaft;
• an air valve lever fixed to the air valve shaft;
• an activating lever pivotably mounted to the air valve shaft and adapted to transmit movement of the throttle lever to the air valve lever after a predetermined angle of rotation of the throttle lever;
• a choke valve lever fixed to the choke valve shaft;
• and
• a fast idle latch engagable by the choke valve lever to hold the throttle lever in a fast idle position until the throttle lever is separately moved.