Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 107Get this manual
HONDA 6FEOAE5A
3DISASSEMBLYIASSEMBLY
Remove the cylinder head assembly (P10-11
Do not reuse the removed valve stem seal
CAUTION Turning valve too fast can damage the valve stem sealsICAMSHAFT
INSPECTION: P10-8 INSTALLATION:
Install the camshaft from the oil pump sideNote to install with the pointed side of cam lobes toward down
VALVE SCREW (6)
VALVE ADJUSTING LOCK NUT)
ROCKER ARM SPRING (2)