Small Engine Final Review Pt. 1

Valve springs are used to open valves

• True

• False

On the compression stroke of a four-stroke engine, only the intake valve is closed.

• True

• False

On the power stroke of the four-stroke engine, both valves are closed.

• True

• False

When both the two-stroke and four-stroke engines, the spark ignites the air-fuel mixture when the piston is near the top of the center.

• True

• False

In a 4 stroke engine, oil is burned with gas in the combustion chamber.

• True

• False

The carburetor is a device for mixing the fuel and lubricating oil.

• True

• False

The piston is the moving end of the cylinder.

• True

• False

It takes four revolutions of the crankshaft to complete one cycle in a four-stroke engine.

• True

• False

In a four-stroke engine, the crankcase contains lubricating oil.

• True

• False

The valves are held closed by the springs.

• True

• False