1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 176Get this manual
11 18Coat pistons, rings, cylinders, and QVIC Ring Compressor, PIN 326591 (PIN 330223 for oversize), with outboard lubricant
19Center connecting rod in piston and locate piston rings on their dowel pinsSlide one piston assembly into the respective cylinder bore while guiding the connecting rod through the block
The piston rings must be correctly located on their dowel pins to prevent permanent powerhead damage