1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 149Get this manual
16Inspect the lower main bearing in placeIf it is removed for any reason, it must be replacedTo replace the bearing, remove the retaining ringPress the bearing off using bearing separator and press17Remove thermostat cover and spring18Remove thermostat assembly and inspect9661
19To assemble the thermostat, insert pin into vernatherm with convex end of pin facing out
20Position vernatherm in sealPosition retainer and spring in thermostat housingAssemble halves