The serial number tag is found on the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found between the thumb screws above the steering tube. Yamaha has dedicated to attaining carbon neutrality within our product line by 2050. Our HARMO electric propulsion system is surely an interesting first https://emilianojhari.madmouseblog.com/17476057/yamaha-250-outboard-top-seal-for-lower-unit-an-overview