2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 121Get this manual
8CYLINDER HEADVALVECAMSHAFT
SYSTEM COMPONENTS 8-2 SERVICE INFORMATION 8-4 TROUBLESHOOTING 8-6 CYLINDER COMPRESSiON 8-7 CYLINDER HEAD COVER REMOVAL 87 ROCKER ARM 89 CYLINDER HEAD REMOVAL 8-11