winter storage
As far as the gas tank that is all that is necessary. One of the great things about the 1800 is that it has a plastic gas tank. No more rusting out over time. Gas tanks for early wings are getting harder to find, as they were metal and prone to rust.
Some folks also either take out the battery or use a trickle charger such as a Battery Tender. Others remove the spark plugs and put a drop or two of oil in each hole, then replace the plugs. Some folks feel that placing the bike on the centerstand, taking the weight off of the tires is better for the tires.
It is also a good idea to give the bike a good wash, dry and wax. Then cover the bike. Dirt can hold moisture in against the finish.
The only thing I do, besides washing and covering is the full tank with stabil. I ride periodically throughout the winter, as we have the few odd days that are temperate. If you ride it at least 10 minutes every few weeks, you won't have a problem. The rides need to be that long, as you want to burn the condensation out of the exhaust system. Just starting and letting run for a couple of minutes can be detrimental.