2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 224Get this manual
CYLINDER HEADVALVE
CAMSHAFT HOLDER INSTALLATION
Apply molybdenum oil solution to the valve stem endsInstall the valve shims in their original locations
Be careful not to damage the sliding surfaces of the lifters and bores,
Coat the outer surfaces of the valve lifters with um oil solutionInstall the valve lifters in their original lifter bores in the camshaft holder