2004-2005 Honda TRX450R Factory Sevice Manual, Page 155Get this manual
CYLINDER HEADIVALVE
CYLINDER HEAD INSTALLATION
Clean the gasket mating surfaces of the cylinder and-cylinder head, being careful not to damage themInstall the cam chain guide by aligning the guide end with the groove in the crankcase and the bosses with the grooves in the cylinder
Install th tw dowel pins and new gasket
CHAIN GUID E
Route the cam chain through the cylinder head and install the cylinder headA pp ly engine oil to the threads and seating surfaces of th cy linder head nuts and inst all the with the washe rsTighten th fo ur nuts in crissc ross patt ern in sev-