Small Engines

The proper breaker point gap is:

.02"

On engines that have breaker points, the storage capacity of the condenser is measured in:

Microfarads

The spark plug fires only at the instant the breaker points _______

Open

Which type of ignition system replaced with the breaker point ignition system:

Solid state ignition system

Gum deposits which clog the carburetor and other fuel system parts are caused by:

Stale gasoline

On engines that have breaker points, opening the breaker points in the ignition system:

Stops the flow of current in the primary circuit.

The breaker point assembly is an electrical ______

Switch

what pushes against the valve tappets to make them move?

cam lobes

A dual element filter has a ___________ type filter as the pre-cleaner.

foam

Single elements_______________________filters should be oiled to help catch dust particles better.

foam

The purpose of the carburetor float is to:

maintain a constant level of fuel in the float bowl.

Which of the following is not a part of the magneto system

mechanical governer

The needle valve in the carburetor float bowl has a needle point that can be in which two types?

neoprene or brass

On carburetors that have adjustments, the initial carburetor adjustment of the needle valve adjusting screw should be:

open 1 1/2 turns

in the _ arrangement, both the camshaft and the valve assemblies are installed in the cylinder head.

overhead cam

The ______________ is a hand-operated plunger, which, when depressed, farces additional fuel through the main nozzle prior to starting a cold engine.

primer

The primary purpose of the ignition system is to:

provide a spark to the spark plug

in an overhead valve configuration, _ transfer motion from the valve lifters to one end of the rocker arms

pushrods

which of the following is not a part of the value system?

ring

A round disc mounted on a shaft in a carburetor the is located beyond the main fuel nozzle is called a/an:

throttle

Which part of the carburetor is responsible for regulating the amount of air-fuel mixture entering the combustion chamber?

throttle

Which of the following is a measure of electrical pressure

voltage

An instrument for measuring only the voltage in an electrical circuit is called a

voltmeter

the ideal air to fuel ratio by weight for a small engine is:

15:1

The recommended cleaning interval for a single element air cleaner for small engines is every:

25 hours of operation

If black smoke is coming from the exhaust when the engine is operating at 3000 rpm's, the most probable cause is:

A rich high speed air-fuel mixture

What closes the breaker points

A spring

The space between a flywheel and the armatureis known as the ______

Airgap

Some small engine applications use a:

Battery ignition system, capacitor discharge ignition system, and electronic ignition system

Which of the following is not an advantage of a solid state ignition system over the breaker point system?

Can use any type of gas

the air-fuel mixture entering a two-stoke cycle engine initially enters the engine through the:

Carburetor

a flexible piece in the carburetor that pulsates when a vacuum is created in the engine and draws fuel into a chamber of the carburetor is called a:

Diaphragm

The purpose of the venturi on a carburetor is to:

Increase air speed/decrease pressure

Which of the following is not an advantage over the breaker point system?

Increased carburetor life

The term which does not represent a type of carburetor found on small gasoline engines is the:

Nozzle feed

The basic purpose of a carburetor is to:

Regulate the mixture of air and fuel

Spark plugs have different types of electrode configurations. They are:

Retracted gap, surface gap, clipped gap, and automotive gap

One of the advantages of a solid state ignition system over the breaker point system is

There are no moving parts

The operating temperature of spark plugs can be studied with a special spark plug having _________ installed in it.

Thermocouple

Which part of the carburetor controls engine speed?

Throttle

when the choke on a carburetor is closed it provide:

a rich air-fuel mixture

Which of the following is a measure of the number of electrons flowing past any given point in a specific length of time? In other words, it is the rate of electron flow.

ampere

which of the following is not a basic type of carburetor?

angled draft

the air-fuel mixture is forced into the intake manifold by ________________.

atmospheric pressure

When installing a paper air filter cartridge,the paper side of the element should face the ______________ the engine.

away from

A round disc mounted on a shaft located at the intake end of the carburetor is called a:

choke

Carburetors that are nonadjustable are equipped with a ______________ jet.

fixed

When the load on the engine increases, the ___________________ automatically opens the throttle valve to allow more air-fuel mixture to enter the engine.

govenor

Which of the following is a part of the magneto system?

high tension coil

The engine speeds up and the governor responds, the engine speed drops and the governor stops functioning. The engine speeds up again and the governor responds again. When this action is repeated over and over, it is known as:

hunting

the (stop switch) grounds the

ignition system, stopping the engine

According to Bernoulli's scientific principle, as air speed________________, it's pressure _______________.

increases, decreases

the difference in the angle between the value seat and the value face is called a/an :

interference fit

A foam air cleaner should be cleaned using:

kerosene or liquid detergent and water

in the _ arrangement, the camshaft is located in the crankcase and the valves are located in the cylinder block, directly above the camshaft lobes.

l-head

what are the three main types of valve train configurations used in small gasoline engines?

l-head, overhead valve, reed valve

On lawn mowers, the ______________ is a factor on how the governor should be adjusted.

length of blade

The part of the engine that connects the air vane governor to the throttle shaft lever is called the:

linkage

Most small engines use the ____________________ system to supply ignition spark.

magneto

Which type governor works off of flyweights?

mechanical

Most governors on Briggs & Stratton engines are of two types:

mechanical and pneumatic

Which of the following is a measure of the resistance to electron flow

ohms

when referring to a type of engine, OHC stands for:

overhead cam

in the _ arrangement, the camshaft is installed in the crankcase and the valves are installed in the cylinder head.

overhead value

when referring to a type of engine, OHV stands for:

overhead valve

The purpose of a small engine's governor is to prevent:

overspeeding and underspeeding

Which of the following is a basic part of the magneto system?

permanent magnets

The carburetor float can be made of which two types?

plastic or brass

Which type governor has a movable air vane that moves based upon the air pressure around the spinning flywheel?

pneumatic

valves that are used in a 4-stroke cycle engine to open and close the port openings are called

poppet valves

The ________________ in a governor system on an engine is deigned to pull the throttle valve to wide open position.

spring

Paper air filter cartridges should be cleaned by_________________

tapping lightly on a hard surface

the purpose of a choke on a carburetor is:

to make it easier to crank a cold engine

the valve _ consists of all of the components that work together to transform the rotation of the crankshaft into the opening and closing of the valves.

train

what is another name for a valve tappet?

valve rifter

the l-head engine is also known as the _______ arrangement.

valve-in-block