1. on the chain
   on the engine
2. on the pump

The cutting teeth are located on the chain. It's called a chain saw for a reason!

1. 1.5 horsepower
   2 horsepower
2. 3 horsepower

Usually it runs on 3 horsepower.

1. as often as a four-stroke engine
   twice as often as a four-stroke engine
2. half as often as a four-stroke engine

A two-stroke engine has rotations twice as often as that of a four-stroke engine.

1. the throttle trigger
   the pull-cord handle
2. the centrifugal clutch

There are a number of components located there, including the centrifugal clutch.

1. to supply air to the spark arrestor and spark plug
   to supply air to the engine and carburetor
2. to allow for the release of hot air

The air intake openings are needed to supply air to the engine and carburetor.

1. the choke
   the magneto
2. the pawl

It's called a choke, and for obvious reason, too. It chokes (or obstructs) the air flow when necessary.

1. copper
   steel
2. aluminum

The flywheel disc, with its metal blades, is made out of aluminum.

1. the drum
   the crankshaft
2. the centrifugal clutch

It's the centrifugal clutch. It either engages or disengages depending on the status of the engine.

1. It works automatically.
   It is painted a different color.
2. It is much smaller.

The centrifugal clutch works automatically. This prevents engine stalling.

1. It attracts magnetic energy in order to keep the metal disc rotating.
   It generates a surge of high voltage for each revolution of the crankshaft.
2. It measures the force of power needed for each revolution of the crankshaft.

The magneto generates a surge of high voltage (10,000-20,000 volts) for every revolution of the crankshaft.

1. one
   two
2. three

There are two, a primary coil and a secondary one.

1. The secondary coil turns 10 times more than the primary one.
   The primary coil turns 100 times more than the secondary one.
2. The secondary coil turns 100 times more than the primary one.

The secondary coil performs 100 times the amount of revolutions of the primary one.

1. to regulate the engine lubrication
   to control the mix of fuel and air
2. to monitor engine overheating

The carburetor has quite an important task. It controls the healthy mix of fuel and air in the engine.

1. It's a handle.
   It's a tube.
2. It's a plate.

The carburetor is a tube-like mechanism with a throttle plate across it.

1. idling
   operating on full power
2. overheated

It means that the engine is idling. Conversely, a fully open throttle plate indicates an engine running normally.

1. the venturi
   the flywheel
2. all the other components

All the chain saw components are bolted onto the engine.

1. mufflers
   roller bearings
2. pistons

At both ends are roller bearings.

1. 1.5 inches (38.1 mm) in diameter and 1.5 inches high
   3 inches (76 mm) in diameter and 3 inches high
2. 5 inches (127 mm) in diameter and 5 inches high

The piston is quite small, measuring about 1.5 inches (38.1 mm) in diameter and 1.5 inches in height.

1. about $100
   no less than $250
2. more than $500

Most ordinary chain saws sell for as little as $100.

1. They're low-voltage spurts of electrical energy.
   They're periodic high-voltage pulses.
2. They're continuous currents.

The electrical currents created by the magneto are periodic high-voltage pulses of energy.