1968 Evinrude Big Twin, Lark 40 HP Outboards Service Repair Manual P/N 4483, Page 50Get this manual

1968 Evinrude Big Twin, Lark 40 HP Outboards Service Repair Manual P/N 4483, Page 50

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CLEANING, INSPECTION, AND REPAIR CYLINDER BLOCK AND CRANKCASE Check cylinder walls for excessive wear and check cylinder ports for carbon accumulationCylinder walls wear in various degrees, depel1ding