Operation of the carburetor systems

Explains how each fuel system works, with schematic figures 2 to 7: the idle system with main metering jets, idle tubes and air bleeds; the part throttle system and main well tubes; the vacuum-operated power diaphragm and power valve; the float and balance spring; the diaphragm accelerating pump; and the thermostatic choke with its vacuum piston.

What this section covers

• Idle system
• Part throttle system
• High speed (power) system
• Float system
• Accelerating pump system
• Choke system