Honda BF9.9A-BF15A Outboard Motors Shop Manual., Page 68Get this manual

Honda BF9.9A-BF15A Outboard Motors Shop Manual., Page 68

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HONDA BF9.9A-BF15A
5 mm PAN HEAD

INSPECTION: P.9-5 REASSEMBLY: Check the valve head for carbon deposits or pitting before installationDo not interchange the inlet and exhaust valves