1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 170Get this manual
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28Remove screw and washer retaining camshaft pulleyRemove pulleyRemove key from cam
29Remove four screws retaining breather coverRemove cover and a-ring sealDiscard seal30Remove two screws and lock washers retaining reed and reed stop to breather plateRemove reed, stop, and plate31Remove a-ring seal and mesh breatherDiscard seal and replace breather, if necessary
32Remove four screws retaining the cylinder head coverRemove cover and a-ring sealDiscard seal