I would go with a good carb cleaning, maybe rebuild,  absolutely change the oil, oil filter, and coolant,  and give it a general tuneup.  
thats pretty much what I did for mine, and mine was parked for about 4 or 5 years, although it was all inside.  
its also a good idea to check the intake path for rodent nests, they like to live in those sort of spots.    not a whole lot else I can think to suggest.