The serial number tag is situated within the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated involving the thumb screws above the steering tube. By moving into your email deal with you agree to get marketing messages from Yamaha Outboards. It's possible you'll unsubscribe at any time. https://trevortcsdf.arwebo.com/59245998/not-known-details-about-marine-speed-boats