1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 21Get this manual
Gearcase Lubrication &
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 operation position, allow oil to drain completely
To refill, place tube or pressure can nozzle of recommended lubricant in drainfill holeDR26109
INotellfOMC Ultra-HPFgearcase lubricant is not available, OMC
Hi-Vis gearcase lube can be used as an alternate