The serial number tag is found 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 of the vertical drive should be Found to the engine model and serial number https://beckettrnqsv.blogspothub.com/35888484/the-basic-principles-of-marine-outboards-for-sale