Some may disagree, but if you have it far apart enough that you know that much, just clean as much of the garbage out of there as you can get to through the intake ports, any that got farther than that is most likely not hard enough to cause any real issue , in MY opinion. I am guessing a little grass, straw, mouse poops etc. Should blow out once you get it fired up. Or you can be worried and stressed and go ahead and tear it down to get the heads off to try and clean it all out. Pain in the a$$ for the risk, again, in MY opinion.