1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 250Get this manual
Gearcase Servicing20, 25, 30 Removal
ill twist and remove all spark plug leads
"'" 1To avoid accidental starting of engine while servicing,
2Remove the trim tabRemove the propeller from the gearcaseInspect the condition of the propeller hubf1l 3Drain the gearcase by first removing the oil level plugthen the oil filldrain plug 4Remove both water intake screens