The serial number tag is found within the SWIVEL BRACKET (port or starboard); or, check the INSTRUCTION PLATE, Situated amongst the thumb screws above the steering tube. OMC Model Number Location The model and serial numbers on the vertical drive must be Found to the engine model and serial number https://yamahaoutboardmotorscanad09741.blogsvila.com/37124909/top-boat-marine-temperature-switch-secrets