1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Repair Manual, P/N 507267, Page 144Get this manual

1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Repair Manual, P/N 507267, Page 144

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10 Use micrometer to check piston conditionMake at least two measurements, 90 from each otherMeasure the piston diameter 1f4 in(6,4 mm) above the bottom edgeRefer to Engine Specifications, Section 1,