1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Manual, P/N 787024, Page 169Get this manual
22Remove center main bearings and split sleeves for inspectionan appropriate ring expander, remove all piston rings from pistonsDiscard the rings
120 23Using
24Using tool as drawn on Page 9-6, remove all wrist pin retaining ringsDiscard retaining rings
25 The wrist pin fit is loose on both sidesPush the wrist pin through to free the piston from the connecting rodIf necessary, use OMC Driver, PI 326356, 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 reassembly
INote Prior
Cleaning
to inspection and assembly, thoroughly clean all powerhead internal components
INote Before
inspecting or assembling powerhead, all internal components must be perfectly clean and free of contaminants
1Remove any carbon accumulation from exhaust port areas
2Remove 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 strongcrosshatch" pattern for best oil retention and ring sealing