The serial number tag is found to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found concerning the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers with the vertical drive ought to be Found around the engine model and serial https://yamaha-outboard-motors-pr38380.oblogation.com/35937104/5-essential-elements-for-yamaha-outboards-for-sale-usa