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Small Engines 2021

Total questions: 30

Worksheet time: 16mins

Name
Class
Date
1.

Most small gas engines are cooled by?

a)

Air

b)

Water

c)

Ethylene-Glycol

d)

Moving Fast

2.

Most of the small gas engine heat is dissipated by?

a)

Fins

b)

Radiator

c)

Cooling Jacket

d)

Fan Blades

3.

If a small gas engine overheats, parts will...?

a)

Distort

b)

Expand

c)

Possibly Seize

d)

All of the Above

4.

The best weight of oil to use in a small gas engine is?

a)

10-40 weight

b)

90 weight

c)

straight 30 weight

d)

power steering oil

5.

What three governor types are used in small gas engine?

a)

manual, mechanical, automatic

b)

hydraulic, electronic, manual

c)

pneumatic, mechanical, electronic

d)

automatic, pneumatic, mechanic

6.

Before draining the oil is a small gas engine you should do what to stir up contaminants?

a)

Shake the engine

b)

Turn it upside down

c)

Run for a little while

7.

When replacing the crankshaft and camshaft, you need to line up the...?

a)

Same number of teeth

b)

Spark plug gap

c)

Timing marks

d)

Valve springs

8.

The camshaft has lobes on it that move the tappets up and down that open and close what?

a)

Valve springs

b)

Spark plug gap

c)

Intake and exhaust valves

d)

Flywheel magnets

9.

The rotation of magnets in the flywheel around an iron core with copper wire windings is used to produce?

a)

Cooled air

b)

Magnetism

c)

Electricity

d)

Gravity

10.

What is the intake valve gapped to?

a)

0.04-0.06

b)

0.05-0.07

c)

0.4-0.6

d)

0.5-0.7

11.

The choke reduces what in the air-gas mixture?

a)

Air

b)

Gas

c)

Oil

d)

Spark

12.

What are the stokes to a four stroke engine in order?

a)

intake, power, exhaust, compression

b)

intake, exhaust, compression, power

c)

intake, compression, power, exhaust

d)

exhaust, power, compression, intake

13.

You can determine the age of a small gas engine by reading the?

a)

Serial number

b)

Warranty

c)

Model number

d)

Price tag

14.

Both valves are closed during which two strokes of a four stroke small gas engine?

a)

intake and exhaust

b)

compression and power

c)

intake and compression

d)

intake and power

15.

A horizontal position engine means that the crankshaft is parallel to the gound.

a)

True

b)

False

16.

One of the greatest hazards to a small gas engine is?

a)

Rain

b)

Sunlight

c)

Wind

d)

Dirt

17.

The material to make engine blocks lighter in weight is?

a)

Lead

b)

Iron

c)

Aluminum

d)

Copper

18.

During which stroke is the air-fuel mixture ignited by the spark plug, forcing the piston down the cylinder?

a)

Intake stroke

b)

Exhaust stroke

c)

Power stroke

d)

Compression stroke

19.

Which of the following supply power to the engine?

a)

crankshaft

b)

tappets

c)

breather

d)

all of the above

20.

Knocking of your engine would indicate

a)

Clogged fuel line

b)

A hole in the fuel line

c)

Valves sticking

d)

Low oil

21.

This part of the engine controls engine speed

a)

Throttle

b)

Governor

c)

Coil

d)

Idle screw

22.

Which component of the carburetor increases the velocity of air moving through the carburetor?

a)

Float

b)

Venturi

c)

Main jet

d)

Needle valve

23.

No spark on an engine normally indicates

a)

Primary circuit is not working properly

b)

Sheared flywheel key

c)

Carburetor needs overhauled

d)

Engine needs timed

24.

An engine shuts off under load. Identify the most probable cause.

a)

Spark plug gap wrong

b)

Carburetor needs adjusted

c)

Connecting rod broken

d)

None of the above

25.

A (a)   is the best tool to use to check valve clearance

26.

Four cycle engines require four strokes of the piston, how many revolutions of the crankshaft does this represent?

a)

1

b)

2

c)

3

d)

4

27.

The piston belongs to the carburetion engine system

a)

True

b)

False

28.

Air is compressed in the engine as both valves close and the piston begins going down in the cylinder.

a)

True

b)

False

29.

The gaskets on a small engine should be replaced after disassembly.

a)

True

b)

False

30.

The head bolts, crankcase, and carburetor bolts should all be torqued to the manufacturer's specifications

a)

True

b)

False