1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 139Get this manual
CYLINDER HEADCYLINDERPISTON Align the punch mark (After 2001: "250" mar k) on the cam sprocket with the index mark on the crankcase, then remove the camshaft and cam
INDEX MARK
INSPECTION
Camshaft
Using micrometer, measure the height of each cam lobe and inspect it for wear or amageSERVICE LIMITS: IN: 35.2 mm (1.39 in) EX: 35.0 mm (1.38 in)