1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 259Get this manual
1351 14Place bead of OMC Adhesive on the upper gearcase in the location shown
136 15Position the propeller shaft assembly in the upper gearcase as shownThe gearcase head has hole in it that must engage pin in the upper gearcaseAllow approximately Y32 in(0,8 mm) clearance between the forward bearing and the thrust washer
1371 16Seat the forward gear and thrust bearing firmly against
the gearcase using aMC Gearcase Alignment Tool, PIN 390880Leave the tool in position until the lower gearcase has been installed
17From bulk spool of gearcase seal, cut new seal to the length of 127h in(32 em)1381 18Apply OMC Adhesive to the machined surfaces of the
upper and lower gearcases and to the exposed area of the gearcase head a-ringLay the seal in the groove of the lower gearcaseCut the ends of the seal to fit exactly in the grooveApply RTV adhesive to the ends of the seal for length of in(12 mm)