1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 105Get this manual
Installation 1Install the flywheel key:
9.9 thru 15Install the key with outer edge parallel to
taper of crankshaft
20 thru 30: Install the key with outer edge parallel to
centerline of crankshaft and single upset mark facing downDR2 115
2Clean the crankshaft and flywheel tapers with OMC Cleaning Solvent and let dryThese surfaces must be clean and dry to allow proper locking of the tapersAlign the flywheel keyway and install flywheelCoat the of the flywheel nut with OMC Gasket Sealing CompoundInstall the nut and torque to the correct valueSee chart belowFlywheel Nut Torque Chart MODEL FTLBSNm ADHESIVE