Dual carburetor

A dual carburetor including a fuel chamber and two air suction passages extending horizontally in parallel with each other above the fuel chamber, and including two main fuel systems and two low-speed fuel systems provided independently for individual air suction passages, comprising:

• two main fuel passages for said two air suction passages extending in parallel with each other in a vertical direction from a central portion of said fuel chamber to a location between said two air suction passages, and said main fuel passages having main nozzles at upper ends thereof to open into said air suction passages;
• main air bleed passages for said two main fuel passages extending from near inlets of said air suction passages in a horizontal direction and connected to said main fuel passages;
• two low-speed fuel passages for said two air suction passages including vertical portions vertically extending in parallel with each other from a central portion of said fuel chamber to a portion between said two air suction passages, and horizontal portions extending horizontally from upper ends of said vertical portions toward outlets of said air suction passages and terminating at low-speed ports;
• and
• low-speed air bleed passages for said two low-speed fuel passages extending in a vertical direction from near the inlets of said air suction passages and connected to said vertical portions.