ORIGINAL: nonstoprc
yes. For my YS', the top is for vent and bottom for fuel. To depressure the tank, pull the top line, the tubing end close to the engine, while pinching it. Release the pressure when the tubing end is away from the fuze.
To fuel the tank, pull the other end (also close to the engine) and insert the fuel line insert to it. The air goes out from the vent return line (pulled out).
codfish,
nice setup.
It seems as though the "T" piece system with fuel dots is simpler why go for the nipple system when you have to use more fuel tube and drill the fuse and firewall? Is there an advantage?