1997 Yamaha YFM600FWAK ATV Service Manual, Page 119Get this manual
ROCKER ARMS
Measure the outside diameter () of the rocker arm shaftsOut of specification -1 ReplaceRocker arm outside diameter: 11.985, 11.991 mm (0.4719, 0.4721 in) Calculate the clearance by subtracting the rocker arm shaft outside diameter from the rocker arm inside diameterClearance greater than 0.08 mm (0.003 in) -1 Replace the defective part(s)Rocker arm to shaft standard clearance: 0.0090.033 mm (0.00040.0013 in)