The serial number tag is found over the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated concerning the thumb screws above the steering tube. This doc is made up of many of Yamaha's beneficial trademarks. It may also comprise trademarks belonging to other companies. Any references to https://outboard-motors-yamaha96173.ja-blog.com/37000131/5-essential-elements-for-yamaha-250-outboard-lower-unit-oil-capacity