Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 197Get this manual
1) Check the oil seal of the crankcase cover, replace if damagedRemove the oil seal and discard itInstall new oil
seal securely
[I1 30 42 mm OIL SEAL
2) Apply grease the lip of the oil seal
r21 CRANKCASE COVER
3) Check the oil seal of the cylinder block, replace if damagedRemove the oil seal and discard itInstall new oil seal securely4) Apply soupy water to the outside of the new oil seal and