Carburettor

Also spelled carburetor, or carb for short.
It is a device for supplying a spark-ignition engine with a mixture of fuel and air.
It regulates the air-fuel ratio.

Parts

• Storage chamber for liquid fuel
• Choke
• Idling/Slow running jet
• Main Jet
• Venturi-shaped air-flow restriction
• Accelerator pump

From a YT video timestamps

• Venturi
• Float
• Throttle Slides
• Jets
• Jet Circuits
• Main Jet

Basic circuits

• Float
• Idle
• Main-metering
• Power-enrichment
• Accelerator-pump

Types

By strokes

• 2-stroke carburetor
• 4-stroke carburetor

NOTE: 4-stroke carburetors can be used in 2-stroke engines too.

By direction of airflow

• Up-draft carburetor
• Down-draft carburetor
• Horizontal carburetor