2001 Yamaha YFM660 Raptor Factory Service Manual, Page 195Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 195

ROCKER ARMS Measure

the outside diameter of the rocker arm shaftsOut of specification ReplaceRocker arm outside diameter: 11.97611.991 mm (0.47150.4721 in)