1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 41Get this manual
Gearcase LubricationAll Models '" To avoid accidental starting of engine while servicing,
i twist and remove all spark plug leads
Remove oil drainfill plug and oil level plug from gearcaseWith motor in normal operating position, allow oil to drain completelyTo refill, place tube or pressure can nozzle of OMC Hi- Vis gearcase lubricant in drainfill hole If OMC Hi-Vis gearcase lubricant is not available, OMC Premium Blend gearcase lube can be used as an alternate With motor in normal operating positionfill until lubricant appears at oil level holeInstall oil level plug before removing lubricant tube or pressure can nozzle from oil drainfill holeDrainfill plug can then be installed securely without oil lossIf the proper tube or filler type can is not available, install drainfill plug Slowly fill gearcase through oil level hole allowing trapped air to escapeInstall plug and tighten to torque of 60-84 in Ibs(7-9 Nm)