The serial number tag is situated to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated amongst the thumb screws above the steering tube. By coming into your email deal with you conform to obtain marketing messages from Yamaha Outboards. It's possible you'll unsubscribe at any time. https://remingtonuofxi.isblog.net/rumored-buzz-on-honda-bf15d-outboard-motor-53961585