Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 104Get this manual
10CYLINDER HEADNALVESI OIL PUMP 1REMOVALIINSTALLATION 4INSPECTION
BF2OAeE6A
2OIL PUMP
5VALVE GUIDE REPLACEMENT
3, DISASSEMBLYIASSEMBLY
6VALVE SEAT RECONDITIONING
1REMOVAUINSTALMTION
Remove the engine cover and the flywheel cover (P6-11Remove the spark plug caps from the spark plugsRemove the choke knob rod, throttle rod pivot and the carburetor assembly (P5-11Remove the cylinder head cover, eight 83 flange bolts and eight plain washers, and the cylinder head assembly
2) Remove the cam pulley and the pulser coil (P6-313) 4)