Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 66Get this manual
16) Clean off oil or grease from the crankshaft and flywheel mating surfaces (tapered section)Make sure that there are no metal objects stuck to the magnets of the flywheel17) Install the flywheel by aligning the woodruff key on the crankshaft with the key groove of the flywheel taking care not damage the pick-up point of the ignition pulse generator18) Apply oil to the thread and seating surface of the flywheel nut19) Hold the flywheel using commercially available flywheel holder and tighten the flywheel nut TORQUE: 88 N-rn (9.0 kgf-rn, 65 Ibf-ft)