Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 159Get this manual
2OIL PUMP aDISASSEMBLY
Remove the three 35 flange bolts and remove the oil pump assembly and oil pump O-ring, Discard the O-ring, replace with new one when reassemblyRemove the two 12 flange bolts and remove the oil pump cover and cover O-ring, Discard the O-ring, replace with new one when reassemblyRemove the inner rotor, pump shaft, 15.8 pin and 11 thrust washerRemove the outer rotor