The serial number tag is located around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found among the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers with the vertical drive should be Positioned to the engine model and serial number https://yamaha-outboard-motors-hi94836.isblog.net/the-smart-trick-of-monaco-motor-coach-for-sale-that-nobody-is-discussing-53580031