2007-2009 Honda TRX300EX TRX300X service manual, Page 136Get this manual
CYLINDER HEADVALVE Clean the mating surfaces of the cylinder head and cover thoroughly, being careful not to damage themPour engine oil into the oil pockets in the cylinder head
Install the dowel pins onto the cylinder head
Install the cylinder head coverInstall the copper washers to the holes indicated byD"marksInstall the cylinder head cover bolts