Design Improvements for the Zenith 601 HDS:
Spill Guard of Wing Tanks
When one fills the tanks in the wing locker, a few drops are usually
spilled. A spill guard welded to the wing tank catches the
spilled fuel and drains it out of the wing via a small tube.
The guard is a bit larger than the opening of the fueling door.
The photos show the guard and the aerobatic style tank cap. The blue
fitting of the tank connects the vent tube to the tank.