1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 21Get this manual
Gearcase Lubrication
8 thru 15
& 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 refill, place tube or pressure can nozzle of OMC Ultra-HPF gearcase lubricant in drainfill hole
If ave Ultra-HPF gearcase lubricant is not available, OMC Hi-Vis 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 be installed securely without oil loss Tighten plugs to torque of 84-86 inIbs(9-10 Nm)