1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 158Get this manual

1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 158

Inspection 1Before any inspection process can begin, all internal components must be clean and free of excess oilRefer to
to inspect each cylinder bore for an out-of-round, oversize, or tapered conditionBe sure the gauge or micrometer is perfectly
square in the bore when measuring f21l6Measure each cylinder in at least two areas as shownEach area should be measured twiceThe
difference between the two measurements in each area is the cylinder out-of-round dimension The cylinder must not be out
of round by more than 0.003 in(0,08 mm) 7The dimensional difference between the two areas is the cylinder taper The cylinder
taper must not exceed 0.002 in(0,05 mm) 8The difference between your measurements and standard bore dimension is cylinder
oversizeRefer to Engine Specifications, Section 1, for dimensions The cylinder must not be oversize by more than 0.002 in(0,05
mm)If any cylinder is outside these tolerances, it must be bored oversizeOne oversize piston is available for this engine