The serial number tag is situated within the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found concerning the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers of your vertical drive should be located on the engine model and serial number https://outboardmotorsyamahavssuz78529.blogocial.com/not-known-facts-about-yamaha-150-fuel-consumption-72628099