1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 22Get this manual
lubrication Chart9.9 thru 15 Frequency Figure Lubrication Point Lubricant Fresh Water Salt Water
30 days 30 days
Cam Follower, Carburetor, and Throttle Linkage Spark Advance Linkage Choke, Shift Lever Shaft and Detent Gearcase flo oz(226 ml)
60 days 60 days
Change after first 20 operating hoursCheck level every 50 operating hoursChange every 100 operating hours or once each season, whichever comes first60 days 60 days 30 days 30 days