WorksheetsSmall Engines 2021
Total questions: 30
Worksheet time: 16mins
Most small gas engines are cooled by?
Air
Water
Ethylene-Glycol
Moving Fast
Most of the small gas engine heat is dissipated by?
Fins
Radiator
Cooling Jacket
Fan Blades
If a small gas engine overheats, parts will...?
Distort
Expand
Possibly Seize
All of the Above
The best weight of oil to use in a small gas engine is?
10-40 weight
90 weight
straight 30 weight
power steering oil
What three governor types are used in small gas engine?
manual, mechanical, automatic
hydraulic, electronic, manual
pneumatic, mechanical, electronic
automatic, pneumatic, mechanic
Before draining the oil is a small gas engine you should do what to stir up contaminants?
Shake the engine
Turn it upside down
Run for a little while
When replacing the crankshaft and camshaft, you need to line up the...?
Same number of teeth
Spark plug gap
Timing marks
Valve springs
The camshaft has lobes on it that move the tappets up and down that open and close what?
Valve springs
Spark plug gap
Intake and exhaust valves
Flywheel magnets
The rotation of magnets in the flywheel around an iron core with copper wire windings is used to produce?
Cooled air
Magnetism
Electricity
Gravity
What is the intake valve gapped to?
0.04-0.06
0.05-0.07
0.4-0.6
0.5-0.7
The choke reduces what in the air-gas mixture?
Air
Gas
Oil
Spark
What are the stokes to a four stroke engine in order?
intake, power, exhaust, compression
intake, exhaust, compression, power
intake, compression, power, exhaust
exhaust, power, compression, intake
You can determine the age of a small gas engine by reading the?
Serial number
Warranty
Model number
Price tag
Both valves are closed during which two strokes of a four stroke small gas engine?
intake and exhaust
compression and power
intake and compression
intake and power
A horizontal position engine means that the crankshaft is parallel to the gound.
True
False
One of the greatest hazards to a small gas engine is?
Rain
Sunlight
Wind
Dirt
The material to make engine blocks lighter in weight is?
Lead
Iron
Aluminum
Copper
During which stroke is the air-fuel mixture ignited by the spark plug, forcing the piston down the cylinder?
Intake stroke
Exhaust stroke
Power stroke
Compression stroke
Which of the following supply power to the engine?
crankshaft
tappets
breather
all of the above
Knocking of your engine would indicate
Clogged fuel line
A hole in the fuel line
Valves sticking
Low oil
This part of the engine controls engine speed
Throttle
Governor
Coil
Idle screw
Which component of the carburetor increases the velocity of air moving through the carburetor?
Float
Venturi
Main jet
Needle valve
No spark on an engine normally indicates
Primary circuit is not working properly
Sheared flywheel key
Carburetor needs overhauled
Engine needs timed
An engine shuts off under load. Identify the most probable cause.
Spark plug gap wrong
Carburetor needs adjusted
Connecting rod broken
None of the above
A (a) is the best tool to use to check valve clearance
Four cycle engines require four strokes of the piston, how many revolutions of the crankshaft does this represent?
1
2
3
4
The piston belongs to the carburetion engine system
True
False
Air is compressed in the engine as both valves close and the piston begins going down in the cylinder.
True
False
The gaskets on a small engine should be replaced after disassembly.
True
False
The head bolts, crankcase, and carburetor bolts should all be torqued to the manufacturer's specifications
True
False
