2004-2005 660 Yamaha Rhino Factory Service Manual, Page 145Get this manual
ROCKER ARMS
dMeasure the outside diameter of the rocker arm shaftsOut of specification ReplaceRocker arm shaft outside diameter 11.97611.991 mm (0.47150.4721 in) eCalculate the clearance by subtracting the rocker arm shaft outside diameter from the rocker arm inside diameterOut of specification Replace the defective part(s)Rocker arm to shaft standard clearance 0.0090.042 mm (0.00040.0017 in)