I would have to vote for full tank with stabil and a trickle charger to be confident that it will be good to go come next use. If you have a concern about the battery TAKE IT WITH YOU! The cold and slow discharge will kill your battery (if you have a slow drain on the battery).

Otherwise you should be fine!

 

Anytime I store a quad, motorcycle, anything of that nature, *as said above*

- Full tank of gas, sta-bil or other fuel additive
- Run/drain carb & turn fuel shut-off to OFF position
- Battery tender

 

Thanks for all your replies guys, i`m new to ATV land so they all really helped.