1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 156Get this manual
r:;-:;l 14Remove the upper main bearing from the crankshaftDiscard the seal and O-ring 1141 15Remove the retaining clip from the center main bearing Separate the sleeves and remove the roller assembliesf151 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 the thermostat coverDiscard the O-ring