Honda BF9.9A-BF15A Outboard Motors Shop Manual., Page 24Get this manual
HONDA BFS.SABFI5 A
cPOOR REFORMANCE
Wet fouled spark plugs due improper choke operationSpark plug faulty (P.3-3)Flooded carburetorImproperly adjusted carburetor pilot screw andor throttle stop screw (P.3-4)Leaking carburetor insulator gasketFuel tank not venting
E speed does not increase
Choke stuck closedImproper valve timingWater in carburetorOverheatingDefective valves or valve seats
Binding of the throttle cableThrottle valve faulty