1994 Johnson Evinrude "ER" 60 LV 150, 150C, 175 Service Manual, P/N 500611, Page 140Get this manual
6Thoroughly wash entire cylinder block and crankcase with warm, soapy water to remove all traces of contaminants7Air dry cylinder block and crankcaseBlow all holes and passageways with compressed air i pressed air pressure at less that 25 psi (172 kPa)
To avoid person injury, wear eye protection and set com-
8Cover the cylinder walls with liberal amount of Johnson or Evinrude Outboard Lubricant to protect them from corrosionInspection 1Before any inspection process can begin, all internal components must be clean and free of excess oil2Make visual inspection of all internal componentsCheck for unusual wear patterns, scuffing or deterioration of aluminum parts, heat-related discoloration of bearings and bearing surfaces, and broken components
rv 3Check for cylinder head warpagefeeler gauge setbar stock using piece of or machinist's straightedge and a
Cylinder head warpage must not exceed 0.004 in(0,10 mm) end to endResurface or replace head if warpage exceeds this dimension4Use 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'3l 5Visually inspect crankcase seal rings for worn, grooved, or chipped condition If they appear worn, use micrometer to measure their thickness Replace any ring that is less than 0.154 in(3,9 mm) thickInstall seal rings in their original positions on crankshaft after inspectionUse telescoping 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