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Small Engine Operation (Mixed Topics)

Total questions: 56

Worksheet time: 43mins

Name
Class
Date
1.
Identify the proper order of the four strokes in a small engine
a)
intake, compression, exhaust, power 
b)

intake, compression, energy (power), exhaust

c)
intake, power, construction, exhaust
d)
exhaust, compression, power, intake
2.
Match marks are on the _______and the ____________
a)
crankshaft and connecting rod
b)
crankshaft and shroud
c)
crankshaft and camshaft
d)
camshaft and govenor
3.

Tappets ride on ______ and push up on _________.

a)
camshaft lobes + connecting rod
b)
camshaft lobes and connecting rod
c)

camshaft lobes + pushrods

d)
none of the above
4.

Define the term, intake. 

a)
An engine operation event in which the air - fuel mixture is introduced to fill the combustion chamber. 
b)
An engine operation event in which the air - fuel mixture is introduced into the crankcase. 
c)
An engine operation event in which the intake and exhaust valves are closed. 
d)
An engine operation event in which the piston breaks the cylinder wall.
5.

During the compression, the piston is traveling upward, and both valves are closed. 

a)
True 
b)
False 
6.

During the intake stroke _____________ are introduced into the combustion chamber. 

a)
Spark 
b)

Air & fuel

c)
Fuel 
d)
Intake valve 
7.

During the exhaust stroke, the intake valve is open, and the exhaust valve is closed. 

a)
True 
b)
False 
8.

Define the term, four—stroke (or four-cycle) cycle engine. 

a)
An internal combustion engine that utilizes four distinct piston strokes to complete one operation  cycle. 
b)
An internal combustion engine that utilizes three distinct piston strokes to complete one operating cycle. 
c)
An internal combustion chamber that utilizes two distinct piston strokes to complete one operating cycle. 
d)
None of the above. 
9.
Identify this part
a)
Crankshaft Gear
b)
Oil Slinger
c)
Starter Pulley
d)
Governor
10.
Identify this part
a)

Shroud or blower housing with recoil starter

b)
Flywheel
c)

Recoil Pulley

d)
Grass Screen
11.
Identify this part
a)
Cylinder Head Bolts
b)
Connecting Rod
c)
Reed Valve
d)

Intake or exhaust Valve

12.
Identify this part
a)
Carburetor
b)
Oil Slinger
c)

Tappet Chamber Cover or Breather Valve

d)
Connecting Rod Cap
13.

Identify the configuration of the engine in this photo.

a)

L—Head or

Flat-head

b)

Over-Head Valves

(OHV)

c)

Over-head Cam

(OHC)

14.
A sump is a reservoir for _______
a)
Water
b)
Gasoline
c)
Oil
d)
Spark
15.

The flywheel performs these 3 basic functions.

a)
Heating, Spark, Momentum
b)
Air Flow, Spark, Momentum
c)
Air Flow, Vacuum, Momentum
d)
Air Flow, Spark, Pump Oil
16.

Electricity is created because a _______ is embedded in the ___________

a)
Magnet + Carburetor
b)
Coil of wire + Flywheel
c)
Magnet + Shroud
d)
Magnet + Flywheel
17.
During the exhaust stroke the piston moves______
a)
Up
b)
Down
c)
Sideways
d)

The Intake Valve

18.

This person is

a)

checking tire pressure.

b)

checking engine oil.

c)

checking small engine coolant level

d)

torching the engine.

19.

This person is

a)

checking spark plug gap.

b)

tightening the coil.

c)

measuring engine use.

d)

checking tire pressure.

20.

How often is the oil level checked in a 4-cycle engine?

a)

annually

b)

weekly

c)

before every use

d)

four times a year

21.

The function of a gasket function is to

a)

seal fluid.

b)

reduce wear on coil pull.

c)

seal gaps.

d)

maintain ignition.

22.

The _______ has several functions: 1) it combines gasoline and air creating a highly combustible mixture, 2) it regulates the ratio of air and fuel, and 3) it controls the engine's speed.

a)

sump pump

b)

magneto

c)

cooling system

d)

carburetor

23.

This is the part of the small engine that ignites the fuel and air mixture.

a)

magneto

b)

coil

c)

carburetor

d)

spark plug

24.

What two components mix to ignite to power an engine?

a)

nitrogen and fuel

b)

oxygen and fuel

c)

nitrogen and air

d)

oxygen and air

25.

What will happen to an engine if there is too little oil?

a)

The engine will seize

b)

The engine may over heat

c)

Causes wear on the internal parts of the engine

d)

All of the above

26.

How long can gas be stored in a fuel (gas) can and remain viable without fuel stabilizer.

a)

About 1 month

b)

About 6 months

c)

About 1 year

d)

About 6 years

27.

Identify this part.

a)
Crankshaft
b)
Oil slinger
c)
Camshaft
d)
Flywheel
28.

Identify the part.

a)

Coil or Armature

b)
Spark Plug
c)
Starter Pulley
d)
Piston Rings
29.

Identify the part.

a)
Flywheel
b)
Camshaft
c)
Crankshaft
d)
Piston 
30.

Identify the part.

a)
Wrist Pin
b)
Connecting Rod
c)
Crankshaft
d)
Piston 
31.

Identify the part.

a)
Piston
b)

Engine Block

c)
Cylinder Head
d)
Piston Rings
32.

Identify this part.

a)
Crankshaft
b)
Cylinder Head
c)
Cylinder Head Gasket
d)
Heat Shield
33.

Tappets ride on ______ and push up on _________.

a)
camshaft lobes + connecting rod
b)
camshaft lobes and connecting rod
c)

camshaft lobes + valves

d)
none of the above
34.

Identify this part.

a)
Flywheel Key
b)
Woodruff Key
c)
Cam Key
d)
Governor
35.

Identify these parts.

a)
Valve Springs
b)
Valve Sprockets
c)
Piston Rings
d)
Armature
36.
Identify this part
a)
Recoil Starter Pulley
b)
Recoil Gear Pulley
c)
Restart Pulley
d)
Flywheel
37.

Identify this part.

a)

Cooling Fan

b)

Cooling Fins

c)

Flywheel Fan

d)

Flywheel Fins

38.
a)

Rocker Arm

b)

Push Rod

c)

Tappet

d)

Oil Slinger

39.

Identify this part.

a)

Valve or Rocker Cover

b)

Crankcase Cover

c)

Air Filter Cover

d)

Cylinder Head Cover

40.

The main part of the ignition system is the _______________________.

a)

electrode

b)

spark plug

c)

recoil

d)

starter

41.

The flywheel works in combination with the _______________________ to provide charge to the spark plug.

a)

coil

b)

capacitor

c)

crankshaft

d)

magneto

42.
What is the function of this component of the ignition system? 
a)
Transfers motion from the camshaft to the push rods 
b)
Makes contact with the magneto to produce an electrical arc
c)
Provides inertia to keep the crankshaft turning during the four-stroke cycle 
43.

OHV stands for ______  ________   _______.

a)
Over Head Volume
b)
Over Hidden Valves
c)
Over Head Valves
d)
None of the above
44.

Identify this part.

a)
Carburetor
b)
Piston And Connecting Rod
c)
Cylinder Head Bolt
d)
Filler Cap with Dip Stick
45.

What is the effect of a fouled spark plug on engine performance?

a)

It improves engine performance

b)

It has no effect

c)

It can cause the engine to run rough or misfire

d)

It increases the engine's horsepower

46.

What is the primary purpose of engine oil in an engine?

a)

To cool the engine

b)

To lubricate engine parts

c)

To clean the engine

d)

To fuel the engine

47.

What is the first stroke in the 4-stroke engine?

a)

exhaust

b)

intake

c)

compression

d)

power

48.

What is the second stroke in the 4-stroke engine?

a)

exhaust

b)

intake

c)

compression

d)

power

49.

What is the third stroke in the 4-stroke engine?

a)

exhaust

b)

intake

c)

compression

d)

power

50.

What is the fourth stroke in the 4-stroke engine?

a)

exhaust

b)

intake

c)

compression

d)

power

51.

Engine bore refers to:

a)

An engine's horsepower

b)

The diameter of a cylinder

c)

How fast the crankshaft turns

d)

Cylinder layout

52.

Stroke is the distance the piston travels from TDC to ____________.

a)

BTDC

b)

TDC again

c)

BDC

d)

ABCD

53.

The total volume of space displaced by the pistons traveling up and down inside all the cylinders is ________________.

a)

Horsepower

b)

Turbocharger

c)

Torque

d)

Displacement

54.

______________________ is the travel distance of the piston.

a)

stroke

b)

bore

c)

diameter

d)

RPM

55.

The measure of mechanical power is called _____________________?

a)

Torque

b)

Horsepower

c)

Bore

d)

RPM

56.

RPM stands for?

a)

revolutions per minute

b)

revolutions per mile

c)

rotations per mile

d)

rapid piston manufacturer

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