Re: 1975 85hp Mercury carb spurts gas
Pull the float bowl covers and replace the float needles/seats and the floats themselves. The replacement parts have been upgraded and will perform better than the original factory items.<br /><br />You can get Mercury parts or many auto parts stores (including Napa) can get Sierra Marine aftermarket replacement parts. Replace the float bowl cover's gaskets, if they aren't available separately, ask for what's known as a "carb packing kit", which contains the most commonly used gaskets. <br /><br />BTW unless your carbs are really nasty inside, you shouldn't have to remove them to do this repair. You can remove the main jet plug in the front of the carb (a brass plug that takes a 7/16" wrench), and blow air into the carb from both the float bowl end and main jet end. This'll clear out most any debris which has accumulated over the years.<br /><br />Get a manual such as Seloc, which will show you how to adjust the float level. Very important so it doesn't leak after you reassemble everything.<br /><br />HTH and Good Luck........ed