1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 150Get this manual
1221 24Remove the ten cyli nder head screwsRemove the cylinder head and discard the gasket1231 25Remove the temperature switch for inspection1241 26Carefully remove the pistons from the cylinder blockProtect the condition of the piston by packing paper towels between the connecting rod and pistonDo not allow the connecting rod to touch the inside of the piston or the cylinder wall1251 27Using an appropriate ring expander, remove piston rings from both pistons1261 28Using tool as drawn on Page 4-8 or OMCRetaining Ring Pliers, PI 325937, remove all wrist pin retaining ringsDiscard retaining rings12711281 29The fit between the wrist pin and bosses of the piston is loose on both sidesPush the wrist pin through to free the piston from the connecting rodIf necessary, use OMC Piston Cradle, PIN 326573, and OMC Wrist Pin Pressing Pin, PIN 326356With the piston skirt flush with the cradle, press out the wrist pin using an arbor pressBe careful not to lose any of the 28 needle bearings or the two wrist pin washersIf any of the bearings are worn or lost, replace all the bearings on reassembly9235