Just bought a 2012 Sea Ray Sundeck 240 with 150 hours. Today, The Smartcraft alarm goes off saying get service soon, Exhaust Oxygen Sensor. Can I replace this/these myself? How many are there? If I replace it/them myself, will the code go away automatically or will I need to go to a merc mechanic and have it reset? Should I also replace the gas filter while I'm at it? This is a Mercruser 350 Mag, Bravo 3. Thanks for the help.
Last edited: