The serial number tag is found around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located involving the thumb screws above the steering tube. By getting into your email address you agree to receive marketing messages from Yamaha Outboards. You could unsubscribe at any time. Finding the https://emilianojhari.madmouseblog.com/17476057/yamaha-250-outboard-top-seal-for-lower-unit-an-overview