make sure that squirrels and the wild chip-monkeys didn't make a home out of the air box!! When I picked up my blasters, they had been sitting under a tarp for 1.5-2 years...maybe even more. The air boxes were filled with acorn shells and it looked like one of the air filters had been nibbled on!!
I just bought new air filters, oiled em up, and the one I didn't imediately rip apart, fired right up....with the old gas!! I was going to put in some new gas, and I did after it fired up, but I just checked and a new filter was all that it needed. I then checked the plug, and it was fine. But yeah, list above should do the trick.