1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 150Get this manual
ROCKER ARMS
Measure the outside diameter (b) of the rocker arm shaftsOut of -7 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) -7 Replace the defective part(s)Rocker arm to shaft standard clearance: 0.009 0.033 mm (0.0004 0.0013 in)