The serial number tag is found within the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Found among the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers from the vertical drive must be Found about the engine model and serial number https://yamaha-outboard-motors-pa27059.smblogsites.com/36900811/rumored-buzz-on-honda-bf15d-outboard-motor