FARM MOTORS 



FIG. 300 BALL GOVERNOR 



(Fig. 301). The latter type of governor works on the 

 principle that when the engine is running at normal 

 speed the weight does not get enough throw to cause 

 the detent to catch in the hook-up stop, but when the 

 speed is increased above normal the weight is thrown 

 far enough to accomplish this. 



560. Carburetor. Before gasoline can be used in an 

 engine for fuel it must be converted into a vapor or into 

 a gas. This process of converting the liquid into a gas 

 is called carburetion, and the device by which it is 

 accomplished is called the carburetor. It is by means of 

 the carburetor that a proper mixture of gasoline and air 

 is made for combustion in the cylinder. A proper mix- 

 ture is one of the important functions of successful gaso- 

 line engine operation. 



