1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 204Get this manual
31Remove screw and washer retaining camshaft pulleyRemove pulleyRemove key from cam
32Remove four screws retaining breather coverRemove cover and a-ring sealDiscard seal33Remove the screw and lock washer retaining reed and reed stop to breather plateRemove reed, stop, and plate34Remove a-ring seal and mesh breatherDiscard seal and replace breather, if necessary