The serial number tag is found to the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located concerning the thumb screws above the steering tube. By entering your email handle you agree to obtain marketing messages from Yamaha Outboards. It's possible you'll unsubscribe at any time. Finding the https://yamaha-outboard-motors-fo77541.bloguetechno.com/about-johnson-175-hp-outboard-motor-parts-72204846