1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Repair Manual P/N 500607, Page 250Get this manual
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Gearcase Servicing20, 25, 30 Removal
2 Remove the trim tabRemove the propeller from the gearcaseInspect the condition of the propeller hubf1l 3 Drain the gearcase by first removing the oil level