1965 Evinrude SportFour Heavy Duty 60 HP Outboards Service Repair Manual, P/N 4204, Page 43Get this manual
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CRANKCASE LOWER HEAD "0" RING INNER WASHER SPRING
Figure 5-10 Carbon Seal Assembly pliers (Special Tool #307429) to remove retaining ringSee Figure 5-10dLoosen but do not remove entirely, the sc