I'm going to do my first 600 mile oil change this weekend and noticed about 4 bolts underneath the bike that all look like drain plugs. I know which one is the engine oil drain plug but what are the others for? My understanding is that you just drain the engine oil plug and that will drain all the fluids in the motor/clutch. Sorry for the ignorance but I have never seen so many "drain plugs" in such a small radius. lol