The serial number tag is found around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located amongst the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers in the vertical drive must be located on the engine model and serial number https://yamahaoutboardmotorsnearm32974.qowap.com/95528721/the-5-second-trick-for-outboard-motor-mercury-yamaha