Agree no reason to empty tank.(unless you're going to store it for a whole year)
Draining the carbs should be fine.
Do fill the tank with non-Ethonal gas if you can and use SeaFoam. A few have suggested putting some two stroke oil in the gas and running the bike until it starts burning it.
As for mice and bugs, covering the exhaust ends is fine. Spock is correct, you'll get moisteue in there either way, so doesn't matter if you "trap" it in there...(that two stroke oil should keep the rust out right?)
Plug up the air intakes on the ears, for some reason this is always a favorite hiding place for mice. Cover the bike with a large cotton sheet, not plastic.
Put a open can of mothballs under the bike, don't put any on the bike as they can react with some paint and plastics.
Agree taking the battery out and bringing it inside. I'd suggest not leaving it on a charger 24/7 but just hooking it up to charge it every month.
The number one issue with long time storage with these bikes is fuel drying up in the carbs and clogging the pilot jet. So it's up to you what method you use to deal with this. I believe draining the carbs and running some straight SeaFoam or carb cleaner through them is as good as any of the others.
Last edited by Knifemaker; 11-09-2013 at 12:19 PM.