The serial number tag is located to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Positioned involving the thumb screws above the steering tube. By coming into your email deal with you agree to acquire marketing messages from Yamaha Outboards. You could possibly unsubscribe at any time. https://yamahaoutboardmotors39299.bloggactivo.com/36055186/yamaha-150-sho-price-fundamentals-explained