1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 125Get this manual
CYLINDER HEADCYLINDERPISTON Align the punch mark on the cam sprocket with the index mark on the crankcase, then remove the camshaft nd cam cha nINDEX MARK
INSPECTION
Camshaft Using micrometer, measure th height of each cam lobe and inspect it for wear or damage SERVICE LIMITS: IN35.2 mm (1.39 in) EX35.0 mm (1 .38 in)