Just a word to the wist, If you do replace the carb listen to the
engine with the box open to make sure it's not pinging. The new fuel,
with ethanol, makes your engine run leaner. If the carb you buy has
smaller jets, along with the new fuel, you can end up with pinging
(detonation) and it can destroy your engine in a very short time. It
happened to the owner of my old boat, one engine had the carb replaced
a few years ago, worked fine for three years, that engine failed last
year. No water in it, bent connecting rods, wiped bearings, burnt valve
seats, it was unbeleavable. The engine had under three hundred hours,
looked like it had 5000 hours on it. The other engine, with the
original carb, no problems at all.