Very little Ethanol in the petrol here, which I hear is the source of most of the fuel-line problems world-wide. The in-tank fuel-line in mine was a black concertina type heavy "plastic" and was factory fitted, judging by the metal clips used to secure it to the pump. And yes, it was a bitch of a job to do road-side. I had heard that the plastic connector from under the tank was a devil to disconnect, easy to break, and that there was a "knack" to disconnect it. Get it wrong and almost impossible to bodge a road-side repair. More art than science. It took hours. And it was only an "educated guess" that the filter was the problem. I was a happy camper when it ran. If you ever have to remove the pump/filter assembly, keep the cable-tie that secures the filter to the pump-body really loose. Work the assembly into the tank slowly and methodically and try to think in 3D. Once in, tighten the cable tie from outside the tank before bolting the mounting plate into position. Not a job I want to repeat road-side in a hurry. My mechanic, who is also a biker, advised putting an egg-cup full of motor oil into the tank ever so often, when its full of fuel, to inhibit rusting inside the tank.