1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Repair Manual, P/N 507870, Page 52Get this manual
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Drill Size Conversion Chart SHOWING MILLIMETER SIZES, FRACTIONAL AND DECIMAL INCH SIZES AND NUMBER DRILL SIZES
Milli Meter
DecEquiv.1570 ,1575 ,1590 ,1610 ,1614 ,1654 ,1660 ,1673 ,1