2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 149Get this manual
CYLINDER HEADVALVE Check the tensioner lifter operation:The tensioner lifter shaft should not go into the body when it is pushed- When the stopper block is pressed in, the tensioner shaft should be pushed into the lifter body and the shaft springs out of the body
CAM FOLLOWER
Check the cam follower and follower bore for scoring, scratches or damageMeasure each follower O.DSERVICE LIMIT: 22.46 mm (0.884 in)