1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 126Get this manual
Installation of Flywheel 1Install the flywheel key: 9.9 thru 15: Install the key with outer edge parallel to taper of crankshaftcenterline of crankshaft and single upset mark facing down 9.915
20 th ru 30Install the key with outer edge parallel to
2Clean the crankshaft and flywheel tapers with GMC Cleaning Solvent and let dryThese surfaces must be clean and dry to allow proper locking of the tapers3Align the flywheel keyway and install flywheelCoat the threads of the flywheel nut with GMC Gasket Sealing CompoundInstall the nut and torque to the correct value See chart below2030