Here's a tip, something i've just tried out and it seems to work. Like most, i love to sit and take in the beauty of my motorbike, no way is it going to sit outside, it's like a fine piece of furniture, to be stared at and enjoyed when not riding. Take a sandwich bag, like a baggie or small zip lock plastic bag and a rubber band, put one over your gas cap and one over your air cleaner. Put a few good wraps around both and you are fume free! No need to empty the tank, a tank with gas in it is less smelly than an empty one, less gas=more fumes. Try it, you'll like it.