The serial number tag is situated to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Positioned amongst the thumb screws above the steering tube. This doc consists of many of Yamaha's worthwhile trademarks. It may contain trademarks belonging to other companies. Any references to other companies or https://caidencinqv.alltdesign.com/yamaha-250-outboard-top-seal-for-lower-unit-an-overview-55769671