The serial number tag is found to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Positioned among the thumb screws above the steering tube. By moving into your email tackle you conform to receive marketing messages from Yamaha Outboards. You could unsubscribe at any time. At PartsVu, https://damienbwfls.blogsuperapp.com/37516604/about-johnson-175-hp-outboard-motor-parts