1988 Johnson Evinrude "CC" 9.9 thru 30 Service Repair Manual, P/N 507660, Page 171Get this manual
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INote Ilf any cylinder is0.030 in.these tolerances, it must piston is outside be bored (0,762 mm) oversize oversizeOne available for this engineTo determine oversize bore add 0.030 in (0,762 mm) to th