Powervalve breather tube. It's normal for a little oil to leak out. if it's anything like a yamaha, the tube is plugged in midway up the chamber so it holds in nasty used 2-stroke oil to lube the workings of the powervalves. Then when you tilt it to put it on the stand it comes oozing out. perfectly normal in my book. Unless honda is differant?
If you can't afford a new four stroke, you can't afford a used one either!
