Evaluation should include the examination of accessible parts for function and damage, according to manufacturer’s specifications. Parts include
- idle circuit
- main circuit
- choke system
- purging or priming system
- high-speed nozzle
- emulsion tube
- orifice jets.
Process/Skill Questions:
- What is the difference between the high- and low-idle circuits?
- What is the difference between an adjustable carburetor and a fixed-jet carburetor?
- How does fuel quality affect the performance of the carburetor?