1989 Johnson Evinrude "CE" Colt/Junior thru 8 Service Manual, P/N 507753, Page 152Get this manual
CleaningA" Models
INote components must be perfectly clean and free of Before inspecting or assembling powerhead, all internal
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 walls Use 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 Remover
r:jl Use OMC Gel Seal and Gasket Remover to remove all traces
of gaskets, adhesives, and Gel Seal II from the cylinder block and crankcase