1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 84Get this manual
CARBURETION (VVALBRO) 15Hold intake side of carburetor upward and pull the choke shaft from the main body of the carburetorTip carburetor over and allow the choke friction ball and spring to fall from the carburetor body18Slowly allow the throttle return spring to disengage all tension and pull the throttle shaft and spring assembly from the carburetor bodyNOTE: Do not lose the nylon bushing located on the throttle shaftCleaning
16Remove the throttle valve screw securing the throttle valve to the throttle shaftPull throttle valve from
between split section of throttle shaftCarefully wash all carburetor components with good quality carburetor cleanerBlowout all carburetor body channels and clean the remainder of the components with compressed airReplace all components that have been malfunctioning or if the components are wornInspection