The serial number tag is found on the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated between the thumb screws above the steering tube. By coming into your email deal with you conform to obtain marketing messages from Yamaha Outboards. You could possibly unsubscribe at any time. https://outboardmotorsyamahavssuz55285.ttblogs.com/16641473/detailed-notes-on-bf75-honda-outboard