Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 156Get this manual
1CYLINDER HEAD REMOVAL Cylinder head assembly can be serviced with the engine installed on the frame1) Remove the oil filler cap and oil drain bolt, and drain the
engine oil into suitable container (P3-2)2) Remove the following parts:engine cover (P5-11- left engine under cover (P5-2)- right engine under cover (P5-31- recoil starter (P.7-213) Pull out the connectors and wires from the clamp on the starter case B4) Pull off the breather tube from the clamp on the starter case and remove itDisconnect the breather tube from