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.
“Banking institutions have banished precious metals and substituted a more fluctuating and unsafe medium; they have withdrawn capital from useful improvements and employments to nourish idleness for the few, who prefer demoralizing pursuits to labors useful to the whole; the peace of the whole is endangered by evils more easily to be deplored than remedied." by Thomas Jefferson,1810 (edited)
Last edited by Jeff in Kentucky; 11-08-2012 at 08:25 PM.