2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 105Get this manual
CYLINDER HEADVALVES DISASSEMBLY Remove the following: Bolts Intake manifold Gasket GASKET
INTAKE MANIFOLD Bolts Cylinder head right side cover Gasket Spark plug GASKET
BOLTS Temporarily install mm bolt to the rocker arm shaft and remove the rocker arm shaftsrocker arms and stopper plateROCKER ARM SHAFTS ROCKER ARMS