You can do this by putting a board under the rear bumper to hold it off the ground and by putting a block under the bulkhead to hold the front up. The object is to get all the weight off the suspension and the track off the ground. 6-Grease all lube points. All snowmobiles these days have several points on the suspension and chassis where you can grease them. This should be a part of your ongoing maintenance throughout the riding season, but it is especially important for summer storage.
Water gets into everything on a snowmobile.
By greasing it at the end of the season you force all the water out of these places so that it can't rust or corrode over the summer. Just look over the machine and you'll see most of the grease fittings and then check your owners manual to see which ones you missed. These few must do things will help your machine stay in good working order season after season. Probably not, but they keep even the little problems from coming up. I know, I already talked about this, but I'm talking about giving the machine a thorough cleaning.