xavier is right.
goto drexchan.fotopic.net to see example how to completely clean throttle body.
alternatively, u could also clean it up without dismantling the TB. (but it wont be 100% cleaning). just open air filter box, take out filter till u see the TB. buy the STP Carburetor Cleaner (cheap cheap ).. then spray inside the hole there and scrub with your finger ..then open up the throttle flaps and spray inside and scrub again. then start engine.. give it a good rev (3-4k).. then ask someone to rev again while u spray directly into TB. (or u can do it all by yourself if u know where to pull.. hehe).
correct me if im wrong k.. but this is how i done it before..kekeke..