1987 Honda Fourtrax TRX 250X Service Manual, Page 64Get this manual
CYLINDER HEADVALVES Measure the' 0.0of each rocker arm shaftSERVICE LIMIT: 11 .92 mm (0.469 inl Calculate rocker arm-to-shaft clearanceSERVICE LIMIT: .068 mm (0 .0027 in)
CAM CHAIN TENSIONER LIFTER REMOVAL
Remove the cam chain tensionet lifter attaching bolts, tensioner lifter and gasket
Make sure the push rod is drewn in the tensioner lifter body as the tensioner bolt is turned clockwise with screw driverMake sure the push rod stays in the tensioner lifter body after he tensioner bolt is turned clockwise completely,