You want to look for the carb float bowl drain plugs, one for each carb, after removing a hose to drain the gas tank and running the engine until it dies from lack of fuel.
One mechanic previously wrote that he got extra business in the spring from people draining their carbs for the winter, because the float valves and carb gaskets sometimes dried out and either changed shape or cracked, and leaked when new fuel was added.
He recommended leaving the gas tank and carbs full of stabilized fuel all winter, or for longer storage than one winter to drain all of the fuel, using a marine fogging oil for the cylinders, and using a 2-stroke oil to slosh around inside the gas tank to keep the bare steel from rusting. Add new engine oil and a new oil filter before storage, unless you want to trust a less acid synthetic oil to not etch the bearings. When you spray the marine fogging oil into the carbs while the engine is running, it coats the gaskets and float valves in the carbs and keeps them moist, like fuel normally keeps them moist.
Also it is best to tape plastic wrap over the intake and exhaust openings, to keep insects and mice out. Get the tires off the floor. Bring the battery to a more climate controlled place and/or hook it up to a charger.
"We have created a Star Wars civilization, with Stone Age emotions, medieval institutions, and godlike technology. We thrash about. We are terribly confused by the mere fact of our existence, and a danger to ourselves and to the rest of life.”
― from Edward O. Wilson, The Social Conquest of Earth.
Last edited by Jeff in Kentucky; 11-08-2012 at 08:25 PM.