Goal Summary:
11
Define friction and explain how it affects the internal engine components.
List the functions of lubricating oil.
Differentiate between the lubrication systems in two-cycle engines and four-cycle engines.
Explain the operation of ejection pumps, barrel pumps, and positive displacement pumps.
Explain the function of oil filter systems and differentiate between the three main types.
12
Explain how air cooling systems work to lower engine operating temperatures.
Describe the basic operation of pressurized liquid cooling systems.
Explain the function of a thermostat and a radiator.
Describe the basic operation of outboard water circulation systems.
Define the basic function of a water pump and give examples of several common types.
13
Perform preventive maintenance on various engine systems, including the crankcase breather, air cleaner, and muffler.
Keep engines clean.
Change the oil in a four-cycle engine.
Prepare an engine for storage.
Describe systematic troubleshooting.
Use manufacturer’s service manuals to determine engine specifications and explain why this information is necessary when servicing a small engine.
Content Goals:
Students will learn the interaction of the cooling system, oil system and preventive maintenance/troubleshooting. Students will understand the interaction of the 3 chapters as they relate to the subject matter as well as to each other.