1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 158Get this manual

1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 158

Cleaning
Before inspecting or assembling powerhead, all internal components must be perfectly clean and free of contami-

1Remove 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
avoid piston or cylinder block damage, restore the chamfer to all port edges using ball hone or other suitable

i gloves when using OMC Gel Seal and Gasket Remover

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