I've been riding my trusty PX200 daily for the past year. I've had it for around 8 years, but really only started commuting on it when I moved, and added some fairly significant highway driving to my commute. In any case, it has been a good scooter, as one expects from a late model P-series. However, in the last month, I was smelling gas frequently when I stopped. At first, I thought I had a leak at the petcock under the tank. I looked under there, and I found no leak. Then I thought it was the carb. So I replaced the carb float bowl and needle, but I still smelled gas. At some point, the leak got so bad, that I could physically see fuel coming out of the bottom of the scooter... ok, time to really hunt it down!
After pulling the tank again, and finding no fuel, I felt behind the motor for the fuel line. It was wet. So I figured that I should pull the entire fuel line to see if I could determine the cause of the leak. When I pulled the fuel line out, I could see that it had gotten hard, and had actually cracked in several spots. The cracks must have been getting worse slowly, and eventually gotten bad enough to leak. Time to replace the fuel line!
I got the tank up and out of the way, and perched it up on the frame. Here you see under the tank, and can see the oil line and the choke cable.
Here is the petcock.
I gently heated the fuel line with a heat gun (a blowdrier works well too), and slipped it on the petcock spigot. Then I clamped it on with a hose clamp.
It is hard to see in this photo, but if you look closely on the right side at the bottom of the oil tank, you'll see a small brass hook for the fuel line. This routes the fuel line in the proper place under the tank. This mounting hook is not on early P models and it a sensible addition on the PX.
Next, I moved the fuel line through the frame.
Here the fuel line is through the bottom of the airbox.
I heated the fuel line again, and slipped it over the carb banjo. Then the hose clamp went on.
And here we have the whole thing ready to roll. Hopefully this fuel line will last a long time. I've ridden the scooter for a few weeks after this fix, and no more fuel leak. Problem solved!