Practice question

Which component of the carburetor primarily controls the air-fuel mixture ratio during engine operation from 1/4 to 3/4 throttle opening?

  1. The jet needle and needle jet (emulsion tube)
  2. The pilot jet and pilot screw
  3. The main jet alone
  4. The choke plate and starter jet

Answer: A — The jet needle and needle jet (emulsion tube)

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Motorcycle Small Engine NC II Practice Questions - TESDA Motorcycle Small Engine Servicing NC II Competency Assessment Exam →