1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 18Get this manual
Gearcase Gear Ratio Lubricant Capacity
14:29 (.483)
GMC Hi- Vis Gearcase Lubricant
8 flo oz(245 ml)
Ignition System
Type Ignition Module
Magneto Powered Capacitor Discharge OMC PIN 583667 None OMC PIN 582508 Spark Plug, Champion Recommended Alternate NA L77JC4 0.030 in(0,8 mm) Sustained High Speed NA QL78V FIXED GAP Alternate NA L78V FIXED GAP
Ignition Module RPM Limit Ignition Coil
10KC 10RS, 14RS