Small Engines Chapter 1 Review Questions and Answers Latest Version Already Passed

Small Engines Chapter 1 Review Questions and Answers Latest Version Already Passed What is the primary function of the engine block in a small engine? The engine block houses the engine components, such as the pistons, crankshaft, and cylinders, providing structure and support. What type of fuel is commonly used in small engines like lawnmowers and chainsaws? Small engines typically use unleaded gasoline mixed with two-stroke oil or straight unleaded gasoline, depending on the engine type. What is the function of the carburetor in a small engine? The carburetor mixes air and fuel in the correct proportions before the mixture enters the engine for combustion. What does a spark plug do in a small engine? The spark plug ignites the air-fuel mixture in the engine's combustion chamber by producing a spark. 2 What is the purpose of the governor in a small engine? The governor regulates the engine’s speed by controlling the throttle to maintain a consistent RPM regardless of load changes. How does a piston function in a small engine? The piston moves up and down within the cylinder, converting pressure from combustion into mechanical power to drive the engine. What does the crankshaft do in a small engine? The crankshaft converts the up-and-down motion of the piston into rotational motion that powers the engine and connected components. What is the role of the air filter in a small engine? The air filter prevents dirt, debris, and other contaminants from entering the engine, ensuring clean air for combustion. How does the cooling system in a small engine work? The cooling system uses either air or a liquid coolant to prevent the engine from overheating by dissipating excess heat. 3 What is the function of the valve system in a small engine? The valve system controls the flow of air and exhaust gases into and out of the combustion chamber during the engine’s cycle. What type of lubrication is typically used in small engines? Small engines use oil lubrication to reduce friction and wear between moving parts, typically applied through a pump or splash system. How does a recoil starter work in a small engine? A recoil starter uses a spring mechanism to wind a cord, which, when pulled, spins the flywheel and starts the engine. What is a common sign of a clogged carburetor in a small engine? A common sign is engine stalling, rough idling, or difficulty starting, often caused by old or contaminated fuel. Why is it important to maintain the correct spark