1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 140Get this manual
CYLINDER HEADCYLINDERPISTON Measure the crankcase 1.0at the cam follower sliding surfaceSERVICE LIMIT: 22.54 mm (0.887 in) Calculate the clearanceSERVICE LIMIT: 0.Q7 mm (0.003 in)
Cam chain tensioner
Check the slipper surface of the cam chain tensioner arm for wear or damage
CAMSHAFT INSTALLATION
Align the "T" mark on the flywheel with the index