2009 Arctic Cat 90 ATV Service Manual, Page 57Get this manual
2Install the main jet by threading it into the jet holder; then install the jet holder into the carburetorTighten both components securely NOTE: Check float arm height by inverting the carburetor freeing the float arm; then measure with ruler the height when the float arm is in contact with the needle valveFloat arm height should be 10.2 mm (0.40 inTo adjust, bend the actuator arm tab
3Install the pilot screw with spring and O-ringNOTE: thin application of lightweight oil will help to seat the O-ring properlyCD615
6Install the float chamber seal