1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 152Get this manual
Inspection 1Before any inspection process can begin, all internal components must be clean and free of excess oil 2Make visual inspection of all internal componentsCheck for unusual wear patterns, scuffing or deterioration of aluminum parts, heat-related discoloration of bearings or bearing surfaces, and broken components
3Check for cylinder head warpage using piece of bar stock
or machinist's straightedge and feeler gauge set Cylinder head warpage must not exceed 0.004 in(0,10 mm) end to endResurface or replace head if warpage exceeds this dimensionand main bearing journalThe lower main bearing journal would only be measured if the bearing was removed for another reasonRefer to Engine Specifications, Section 1, for dimensions
fJl 4Use micrometer to measure the diameter of each crankpin
f41 5Use telescoping gauge or inside-reading
L!.J inspect each cylinder bore for an out-of-round, oversize, or