2011 Arctic Cat 400 TRV ATV Service Manual, Page 73Get this manual
12Inspect the carburetor mounting flange for damage and tightnessASSEMBLING 1Thread the idle adjust screw into the carburetor making sure the washer and spring are properly positioned2Install the pilot screw, spring, washer, and O-ring CC753
NOTE: Check float arm height by placing the carburetor on its side wfloat contacting the needle; then measure with caliper the height when the float arm is in contact with the needle valveFloat arm height should be 17 mm (0.7 in
6Place the float chamber into position making sure the O-ring is properly positioned; then secure with the Phillips-head screws
NOTE: Turn the pilot screw clockwise until it is lightly seated; then turn it counterclockwise the recommended number of turns as an initial settingNOTE: Note the locations of the jets and holder during assembling procedures