The serial number tag is found to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located among the thumb screws above the steering tube. This document is made up of many of Yamaha's precious trademarks. It may additionally have trademarks belonging to other companies. Any references to https://yamahaoutboardmotorsparts18158.blogolize.com/new-step-by-step-map-for-yamaha-30-hp-jet-outboard-75870606