1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 198Get this manual
fJl 10It is very important to notice that there are port and starboard pistons in this engineAll pistons are also marked "exhaust side Using these marks, orient the pistons with the correct cylinders and mark the bottom wrist pin hole with an indelible marker1sl 11It is very important to notice that the connecting rods have top and bottom The diagonal oil hole will always face the flywheel
Using OMC Cone and Driver PI 396747 and PI 331913, install new retaining ring in the bottom wrist pin hole of each piston, previously marked in step 10from the piston notch
r,Q1 13The retaining ring gap must face straight down, away 14Support the piston in OMC Piston Cradle PIN 326572 with the one wrist pin retaining ring facing downOil the wrist pin bore, wrist pin, and bearing assembly and install the connecting rod with the oil hole facing upRepeat this procedure for each remaining piston and connecting rod15When all components are in place, install second new wrist pin retaining ring following steps 12 and 131121 16When all pistons and connecting rods are assembled,