The serial number tag is found to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Positioned between the thumb screws above the steering tube. This document consists of many of Yamaha's worthwhile trademarks. It may also incorporate trademarks belonging to other companies. Any references to other companies https://yamahaoutboardmotorsforsa52840.blogofoto.com/68043341/the-outboard-motor-size-for-boat-diaries