1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 158Get this manual
14Remove the upper main bearing from the crankshaftDiscard the seal and O-ringSeparate the sleeves and remove the roller assemblies
1141 15Remove the retaining clip from the center main bearing 115l 16Inspect the lower main bearing in placeIf it is removed
for any reason, it must be replaced To replace the bearing, remove the retaining ringPress the bearing off using bearing separator and press17Remove the thermostat coverDiscard the O-ring18Remove the thermostat components for inspection