Small Engine Performance, Maintenance, and Troubleshooting

The diameter of the cylinder is known as the engine ____.

• compression ratio

• bore

• power

• work

Top Dead Center is the ________ point of upward travel of the piston within the cylinder. Bottom Dead Center is the ________ point of piston travel within the cylinder.

___ refers to the volume of air and fuel the engines can draw into its cylinder(s) during an intake stroke.

• compression ratio

• bore

• power

• displacement

______ is the relationship of the total volume of empty space above the piston when the piston is at BDC compared to the volume when the piston is at TDC.

• compression ratio

• bore

• power

• displacement

Match the following

• Force

• An influence that tends to change the motion of an object or causes stress in a stationary object.

• Work

• An action in which a force applied to an object causes a displacement of the object.

• Power

• A measure of the amount of work that can be performed in a given amount of time.

Oil should be checked regularly and kept between the minimum and maximum levels.

• True

• False

What is the function of oil in an engine?

• to clean

• to lubricate

• to cool

• all of these

Oil used today is bad if it is dark in color and should be changed immediately.

• True

• False

_____ oil acts like 10 weight oil in the winter and as a 30 weight oil in the summer.

• SAE 30

• 30W10

• 10W30

• none of these

_____ can be used to help reduce the deterioration of fuel, allowing it to be stored for longer periods of time.

• stabilizers

• ethanol

• E85

• engine oil mixes