1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Manual, P/N 507122, Page 107Get this manual
Installation 1Install the flywheel key: 9.915Install the key with its outer edge parallel to taper of crankshaft 20 thru 30Install the key with its outer edge parallel to
centerline of crankshaft and single upset mark facing down2Clean the crankshaft and flywheel tapers with OMC Cleaning Solvent and let dryThese surfaces must be clean and dry to allow proper locking of the tapersDR2115