Final answer:
Float-type carburetors with economizers are set for lean mixtures to enhance fuel efficiency during cruise conditions. The economizer system ensures additional fuel only flows during high power engine settings.
Step-by-step explanation:
Float-type carburetors fitted with economizers are typically adjusted to ensure the most efficient fuel mixture during cruise conditions, which means they are set for lean mixtures. The economizer system works by allowing additional fuel flow only when the engine is operating at a high power setting, such as during take-off or climbing.
When the engine runs in cruise at lower power settings, the economizer is not activated, and the carburetor delivers a leaner mixture that provides better fuel economy.Float-type carburetors with economizers are set for lean mixtures to enhance fuel efficiency during cruise conditions. The economizer system ensures additional fuel only flows during high power engine settings.