RE: Neoprene, Tygon, and Viton UV Resistance
If anyone has used viton (inside the tank) long enough till it had to be replaced, did it need replacement because if was too stiff, or because it was getting cracked/checked?
The reason I ask is I would like to have an idea (without taking the tank out and apart for inspection) when the line will become too stiff and cause the walbro clunk to not be in good contact with the fuel.
I've found that on small engines (20cc), I have to use a 12 to 14 oz tank in order for the viton line to be long enough to flex enough. I then position the vent line around the middle of the tank so I only fill it about half way. Has anybody used an 8 ounce tank with viton successfully?