1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Repair Manual, P/N 507122, Page 259Get this manual
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23 Assembly
12514 Install two new upper driveshaft seals back to back in the
gearcase using OMC Upper Driveshaft Seal Installer, PIN 330655, attached to OMC Drive Handle, PIN 378737