The serial number tag is situated to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated between the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers with the vertical drive must be Found within the engine model and serial number https://elliotbtecc.pages10.com/5-essential-elements-for-yamaha-outboards-for-sale-usa-72163871