2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 221Get this manual
CYLINDER HEADIVALVEICAMSHAFT
CYLINDER HEAD ASSEMBLY
corrsas
SPRING RETAINER
OU TER VALVE SPRING
INNER VALVE SPRING STEM SEAL
SPRING SEAT VALVE GUIDE
INTA KE VALVE EXHAUST VALVE