Yep, done it a few times. Pull off the airbox (excellent opportunity to do a jet kit as well) and you will have visual access to it. I use an 8mm 1/4 drive socket on an extension with my air ratchet to remove it (4 bolts) a few different length extensions is helpful.
Once you get it all cleaned out, be sure to seal it up good with silicone or some form of sealant before putting it back on. I sealed the drain hole at the bottom of it and the rope hole and a thin layer of silicone around the whole sealing surface.
I already ruined one recoil and replaced it.......... under $40 for the new one. With my new sealing technique, I try it before every ride and reseal the rope hole after I break the seal, I have had no more problems.