Give it a good check over and repair anything that needs fixing. Change your drive fluid, grease it, clean the clutches, leave the belt off and loosen the track. I personally have had very poor results using stabil. and I don't fog the engine. I use my sled tank as a fuel storage for my lawn mower and keep sputting new fuel in and taking it back out for the mower. I run my sleds every 3 or 4 weeks until they are warm. I realize some put theirs in storage and don't look at them until it is time to go riding next winter but for me, running new fuel through them every month works well.