Fuel delivery systems on vintage tractors were delightfully uncomplicated and functional. Instead of relying on mechanical or electric fuel pumps, fuel tanks sat elevated directly above the cast carburetor. Gravity fed fuel down through simple copper lines and glass sediment bowls, reducing moving parts and ensuring steady fuel flow as long as lines remained clear. https://www.pr4-articles.com/Articles-of-2024/upgrading-old-tractor-modern-hydraulics-lights