2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 178Get this manual
CYLIND ERPISTON Coat new -ring with coolant and ins tall it on he water pipeCon nect the water pipe and secure it
with the bolt Install the cam chain tenstcner lifter with new gasket and ighten he two mounti ng bolt sInstall the cam shaft (page 8-16 )