The serial number tag is situated around the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated among the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers on the vertical drive should be Situated about the engine model and serial number https://yamahaoutboardmotorsforsa72467.liberty-blog.com/37030158/5-simple-techniques-for-new-25-hp-outboard-for-sale