The serial number tag is located around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Positioned between the thumb screws above the steering tube. By coming into your email address you agree to receive marketing messages from Yamaha Outboards. You could unsubscribe at any time. Like a https://rivererarm.mybjjblog.com/yamaha-150-sho-price-fundamentals-explained-49228992