1997 "EU" Johnson Evinrude 5 thru 15 Four Stroke Service Manual, P/N 507262, Page 169Get 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 necessary32Remove four screws retaining the cylinder head coverRemove cover and a-ring sealDiscard seal