1995 Johnson/Evinrude Outboards 50 thru 70 3-cylinder Service Repair Manual P/N 503149, Page 153Get this manual
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[] 9 Use micrometer to check piston conditionMake at least two measuements, 900 from each otherMeasue the piston diameter 1f4 in(6,4above the bottom edgeRefer to Engine Specifications, Section 1, for