.30
The recommended plug gap for the 1993 model, 3hp Evinrude outboard is .030 in.
The correct spark plug gap for the 1994 model, 25 hp Evinrude outboard is .030 in.
The 1996 model, 175 hp Evinrude outboard spark plug recommendations...... Champion Ql78YC gapped at .030
The Gap is .030
The 1990 model, 90 hp Evinrude outboard can use either an NGK BR7HS, or Champion L77JC4.
The correct air gap is .032 in.
The correct gap would be .030 ln.
I use the QL77JC4 Champion plugs with a 0.030in gap.
The plug gap for the 35 hp Evinrude outboard is .030 in.
http://www.boatsetup.com/SparkPlugChart.pdf states .030 (all years 2stroke)
.040
Spark plug gap on this engine is .030