5. True or false:

• The fuel system is designed, to store liquid gasoline and to deliver it to the engine cylinders on the intake strokes in the form of vapour mixed with air.

• Sometimes both are mounted outside the same drum.

• They must not be well and strongly made.

• The carburetor is designed to mix each pound of gasoline with 9 to 20 pounds of air.

• It is necessary to explain the importance of brakes.

• The fuel system consists of a tank in which the liquid gasoline is stored, a fuel line, or tube, a pump and a carburetor.