So many of our tools and toys are powered by small engines. Think lawnmowers, chainsaws, outboard boats and snowmobiles. It's a good idea to have a working knowledge of how these systems work and what to do when they don't.
What is the best system for servicing your small engine?
wait till it breaks
What are small gas engines usually cooled by?
What’s the first step to any small engine repair?
Disconnect the spark plugs.
Drain all the gasoline.
Put the car in reverse so it can’t accidentally run you over.
What should battery terminals be cleaned with?
a damp rag
engine cleaning solution
baking soda and a wire brush
What does the term “viscosity” describe?
Which of the following small engine parts are an example of a wear part?
Most small engines can be repaired using standard general procedures, but some have specific or unusual requirements. What’s the best way to proceed if you’re stuck?
Contact the manufacturer.
Throw it away and buy a new one.
Post on Reddit.
If there is white or blue smoke coming from the tailpipe, what might be wrong?
The engine may be burning oil.
The catalytic converter could be on fire.
Your exhaust fluid reservoir needs to be refilled.
Which of the following are types of ignition systems used with small engines?
magneto-powered and battery-powered
battery-powered and throttle-powered
mechanical-breaker and rechargeable-battery
What force does a mechanical governor use to determine the load on an engine?
force of gravity
What does a choke do?
controls the amount of fuel moving through the lines
controls the amount of air entering the fuel
controls the amount of throttle the driver can apply
What does fuel stabilizer do?
preps the fuel system for replacement
preps the fuel system for storage
turns the fuel from gasoline into water
How long does it take for gasoline to break down?
What do four-stroke engines mix in with gasoline?
What controls the speed of the engine?
In a mechanical breaker ignition system, what provides the spark to ignite the fuel?
What component delivers the engine's power to the various parts of the machine (e.g. the wheels, the blades)?
the connecting rod
How often should you change your engine oil?
after every 25 hours of use
after every 45 hours of use
after every 60 hours of use
What are in-line fuel filters usually made of?
a metal mesh screen
disposable, pleated paper
a plastic sediment bowl
What are the two types of air cleaners used in a small engine?
oil bath and dry
paper and metal
dry and metal
How many types of carburetors are usually used in small engines?
How many systems does a gasoline powered engine have?
What will an incorrectly adjusted governor do to an engine?
It will damage or destroy it.
It will slow the engine down.
It will use up large amounts of fuel.
What should the density of a conventional battery cell be?
0.1 to 0.2
1.26 to 1.28
1.9 to 2.1
How much voltage does a new spark plug require?
2, 000 volts
5, 000 volts
10, 000 volts
What should you use to mix the correct ratio of oil and fuel for your engine's lubricating system?
special mixing bowl provided by the manufacturer
any non-metal mixing bowls
a vented gas can only for mixing purposes
What is the most common viscosity for lubricating grease?
What temperature does an internal combustion engine reach?