Carburettor: It supplies the air fuel mixture at varying proportions that suits the changing operating conditions of motorcycle. The carburettors for 100 cc and 125 cc motorcycle are respectively

Carburettor has following main functions:

• It breaks the fuel into small particles (fine mist). This function is known as atomization. The atomized particles of liquid evaporate to produce vapour of fuel.
• To mix both air and fuel.
• Provide adequate quantity of air fuel mixture according to temperature, load and speed conditions.