1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 145Get this manual

1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 145

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If any cylinder is outside these tolerances, it must be bored oversizeA 0.030 in(0,762 mm) oversize piston is available for this engineTo determine oversize bore add 0.030 in(0,762 mm) to the standard