The serial number tag is located on the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found concerning the thumb screws above the steering tube. This document contains many of Yamaha's important trademarks. It could also include trademarks belonging to other companies. Any references to other companies or https://yamaha-outboard-motors-hi23092.blogtov.com/17389410/the-smart-trick-of-yamaha-150-gph-that-nobody-is-discussing