The serial number tag is found on the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, located between the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers of your vertical drive needs to be Found over the engine model and serial https://outboardmotorsyamahavssuz71088.luwebs.com/37695771/5-essential-elements-for-yamaha-250-outboard-lower-unit-oil-capacity