1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 153Get 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
l=.J or machinist's straightedge and feeler gauge set
3Check for cylinder head warpage using piece of bar stock
Cylinder head warpage must not exceed 0.004 in(0,10 mm) end to end Resurface or replace head if warpage exceeds this dimension
f31 4Use micrometer to measure the diameter of each crankpin
and 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
gauge or inside-reading micrometer to inspect each cylinder bore for an out-of-round, oversize, or tapered conditionBe sure the gauge or micrometer is perfectly square in the bore when measuring