1987 Johnson/Evinrude CU Outboards 35A thru 55 Service Manual, Page 38Get this manual
Gearcase LubricationAll Models Disconnect electrical connector between armature plate and power pack to avoid accidentally starting motorSee Section 3
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 drain fill hole If OMC Hi-Vis gearcase lubricant is not available, OMC Premium Blend gearcase lube can be used as an alternateWith motor in normal operating position, fill 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)