1994 Johnson/Evinrude "ER" 2 thru 8 outboards Service Manual, Page 175Get this manual
1261 7Install piston rings on each pistonSpread each ring with
ring expander just enough to slip it over the head of the piston and down into place
8Coat the pistons and cylinder bores with oil
r:;::;J 9Place the piston in OMC Ring Compressor, PIN 326589Make certain that the rings are correctly positioned in their grooves with respect to the dowel pinsDamaged pistons and broken rings may result from imperfect alignment of the ring gap and the dowel pinsThe piston rings must be correctly located on their dowel pins to prevent permanent powerhead damage
1271 10Startthe piston into bore ofthe cylinder with deflector of the piston (sharp edge) toward intake port side of the
cylinder block
11 Loosely install the cylinder head to prevent the pistons from falling out128
Connecting rod cap cannot be turned end for endTo assist correct assembly, small embossments are provided on matching side of rod and cap
1291 12If removed, lubricate inside of new crankshaft seall