I have a 1989 Kawasaki 650sx and I noticed the other day fuel leaking out slowly from the fuel petcock selector switch. No fuel is leaking inside the hull. It just slowly leaks down on the outside and then a very small amount (few drops over a week) builds up in the foot well. I look the plastic **** off and couldn't see anything obvious. From the inside I tightened all the bolts that are directly behind the ****.

Any ideas on how to fix this? I can take some pictures if needed.

Thanks,

-Nick