I've stored my tractor for the entire winter for the last 5 years. It's kept in my barn. It usually sits unused from mid-October until March. Here's what I do:
<ul type="square"> [*]Put the tractor up on blocks. All 4 wheels off the ground. [*]Leave the hood open. Keeps the mice from nesting on top of the engine. [*]Fill the tank to the top w/Diesel. Probably ought to start using stabilizer, but never have. [*]Pull the battery and leave it on the trickle charger. [/list]
I've never had a problem. My JD-790 has about 250 hours on in now, and it starts of the 1st try, even after sitting all winter!