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. OMC Model Number Location The model and serial numbers on the vertical drive need to be located on the engine model and serial https://ebayoutboardmotorsyamaha27744.qowap.com/95901254/5-essential-elements-for-yamaha-250-outboard-lower-unit-oil-capacity