2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 220Get this manual
CYLINDER HEADIVALVEICAMSHAFT Install th four ho lde bolts and ig ht en them Apply mo ly bdenum oil sol ution to the cam lobes
MiJl(C sure the tlm"'q mmk un IhfJ sproc ke alll)ns wom Ihe cylmdof sur