1965 Evinrude 90 HP StarFlite Service Manual, PN 4206, Page 48Get this manual
bRemove hex screws from upper crankcase head cRemove hex screws from lower crankcase headRemove carbon seal from lower end crankshaft by removing retaining ringThen remove the other components of seal assemblyUse Truarc No4 pliers (Special Tool307429) to remove retaining ringSee Figure 5-12dLoosen but do not remove entirely the screws holding lower bearing retainer plate to lower crankcase headTap crankshaft with rawhide mallet to break seal between crankcase and cylinder, and remove crankcase Figure 5-8Removing Flywheel with Puller hDisconnect thermostat hosesiRemove rear lower motor cover with exhaust cover, and remove front lower motor coverjRemove six nuts and six screws attaching power head to lower unitSee Figure 5-9Lift power head from exhaust housing and place on bench for disassemblyHoist may be used if available by reattaching flywheel ring gear cover with lifting bailPower head must be placed on bench so that crankshaft is horizontal and crankcase is facing upWeight of power head should be supported by the four bosses on the four cylindersSee Figure 5-10