Small engine CDE-2

The camshaft opens and closes the:

• intake valve

• exhaust valve

• intake and exhaust valves

• reed valves

The thickness of the margin on a new Briggs & Stratton valve is:

• 1/64"

• 1/32"

• 1/16"

• 1/8"

Briggs & Stratton recommends that valves be replaced when the margin measures less than:

• 3/64"

• 1/16"

• 1/32"

• 1/64"

Which of the following is not a type of valve failure?

• nicked

• checked

• burned

• swollen

Why are the valves more important in a one-cylinder engine than a multi-cylinder engine?

• They are not more important in a one-cylinder engine.

• The one-cylinder engines cost more.

• If the valves fail in a multi-cylinder engine you only lose a portion of the power, but if they fail in a one-cylinder engine you lose all power.

• The one-cylinder engines are more powerful.

What causes valves to stick?

• gum accumulation

• old oil

• wrong viscosity of oil

• air filter clogged

______ is a process where the valve face is rubbed against the valve seat using an abrasive compound in order to produce a particular type surface.

• honing

• boring

• seating

• lapping

Valve overlap is when both valves are:

• closed

• open

• both a and b

• neither a nor b

A machined hole in the block through which the valve stem passes in order to align the valve and assure accurate raising and lowering in relation to the seat is called the:

• valve tunnel

• valve guide

• valve passage

• valve insert

A ______ must be used on each valve to hold it firmly against the seat.

• grinding compound

• valve spring

• valve tappet

• valve push rod