1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Manual, P/N 507265, Page 155Get this manual
8 DR1641
7Using OVIC Cone, PIN 318600, and Driver, PIN 318599, install new wrist pin retaining rings in each wrist pin holeGap of the retaining ring faces down, away from notch in piston
8Repeat Steps thru for each piston
9Install piston rings on each pistonInstall each piston ring set on the piston that was used to test the ring clearancesSpread each ring with ring expander just enough to slip it over the head of the piston and down into place
INote Be sure gap of ring fits squarely around dowel pin10Coat pistons, rings, cylinders, and av1C Ring Compressor, PIN 326592 (PIN 330222 for oversize), with outboard lubricant
11Center connecting rod in position and locate piston rings on their dowel pinsWith the word "UP" on dome of piston facing flywheel end of crankshaft, slide piston into its respective cylinder bore while guiding the connecting rod through the block