1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 135Get this manual
1221 23 Using an appropriate ring expander, remove all piston rings from pistonsDiscard the rings
1231 24Using tool as drawn on Page 4-6, remove all wrist pin
retaining ringsDiscard retaining rings
1241 25The wrist pin fit is loose on both sidesPush the wrist pin
through to free the piston from the connecting rodIf necessary, use OMC Driver PIN 396747 and OMC Piston Cradle PIN 326572 to remove the wrist pin bearing26Be 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 28 bearings during reassemblyPrior to inspection and assembly, thoroughly clean all powerhead internal componentsCleaning Before inspecting or assembling powerhead, all internal components must be perfectly clean and free of contaminants1Remove any carbon accumulation from exhaust port areas2Remove any carbon accumulation from cylinder head combustion chambers3If cylinder walls are glazed from extended use, use medium grit cylinder hone to resurface wallsUse slow RPM to achieve an strong "crosshatch" pattern for best oil retention and ring sealing