Title: Service the fuel system on two- and four-stroke engines.
Course: Small Engine Technology II (20110-II) > Section: Diagnosing and Troubleshooting the Fuel System

Service should include inspecting the condition of the

- fuel tank
- fuel lines
- fuel filter
- fuel pump
- Evaporative Emission Control System (EVAP) needle valve and seat function
- diaphragm
- spring
- body housing

according to manufacturers specifications and instructor's guidelines.

Process/Skill Questions:

- What is the function of the fuel pump?
- What tools are needed to disassemble a fuel pump?
- How is a fuel pump cleaned?
- What type of fuel pump works the most efficiently?
- How is fuel pressure checked?
- How should one dispose of used gasoline?
- How often should fuel be tested for spoilage?
- Why should a fuel system maintain good fuel pressure?
- How does ethanol affect fuel system components?