The serial number tag is found around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located in between the thumb screws above the steering tube. The good thing is, PartsVu features a wealth of resources to help you find the Mercury outboard parts you need to keep https://mariopibby.designi1.com/57724801/top-guidelines-of-evinrude-15-hp-outboard-motor-manual