2004-2005 660 Yamaha Rhino Factory Service Manual, Page 249Get this manual
CARBURETOR
8Check: free movement (piston valve) Sticks Replace the piston valve guide and the piston valveInsert the piston valve into the carburetor body, and check for free movement9Check: free movement (throttle valve) Sticks ReplaceASSEMBLING THE CARBURETOR NOTE: Before assembling the carburetor, make sure to turn out the pilot screw the same number of times, as noted before disassembly, from the seated position to the set positionCAUTION: Before assembling, wash all of the parts in clean petroleum based solvent1Measure: float height Out of specification AdjustFloat height (F.H 13 mm (0.51 in)