1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 150Get this manual
17 17Carefully lift straight up and remove the crankshaft1,6l 18Slide the upper main bearing assembly off the crankshaftDiscard the O-ringRemove the upper crankshaft seal as necessaryr:;:;J 19Carefully remove the retaining rings and remove the
center main bearings and split sleevesIdentify the components and keep them separate
[!!] 20Remove and discard driveshaft O-ring f191 21If the lower main bearing is to be replaced, remove its retaining ring with OMC Retaining Ring Pliers PIN 303858Use bearing separator to press the bearing offDiscard the bearing