1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Manual, P/N 507122, Page 171Get this manual
Cleaning 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 hone to resurface wallsUse slow RPM to achieve strong "crosshatch" pattern for best oil retention and ring sealing To avoid piston or cylinder block damage, restore the chamfer to all port edges using ball hone or other suitable tool'" To avoid personal injury, wear eye protection and rubber gloves when using OMC Gel Seal and Gasket Remover4Use OMC Gel Seal and Gasket Remover to remove all traces of gaskets, adhesives, and OMC Gel-Seal" from the cylinder block and crankcase5Carefully remove any carbon accumulation from the tops and ring grooves of the pistonA ring groove cleaning tool can be made by breaking an old ring and grinding an angle on its endDo not damage ring grooves while cleaning6Thoroughly wash entire cylinder block and crankcase with warm, soapy water to remove all traces of contaminants'" To avoid personal injury, wear eye protection and set compressed air pressure at less than 25 PSI (172 kPa)7Air dry cylinder block and crankcaseBlowout all holes and passageways with compressed air8Cover the cylinder walls with liberal amount of Johnson or Evinrude Outboard Lubricant to protect them from corrosion E u