1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 21Get this manual
Gearcase LubricationAll Models
To avoid accidental starting of engine while servicing, 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 refillplace tube or pressure can nozzle of OMC Hi-Vis gearcase lubricant in drainfill hole
r::=:J 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 position, fill until lubricant appears at oil level hole Install oil level plug before removing lubricant tube or pressure can nozzle from oil drainfill holeDrainfill plug can then be installed securely without oil loss Tighten plugs to torque of 60-84 inIbs(7-9 Nm)