HANDLING THE ENGINE. 49 



direction. Theoretically, the engine would follow a smooth 

 straight road without turning the wheel at all, but in prac- 

 tice it is always necessary to turn it a little. It is impor- 

 tant to keep your eye on the front wheels of the engine. 



Setting the Engine. A little practice is necessary to 

 enable the operator to quickly line and set the engine, but this 

 is acquired by most men in time. On a calm day the engine 

 and the separator should be "dead in line," that is, in such a 

 position that a line drawn through the edges of the fly-wheel 

 rim would pass through the edge of the separator cylinder- 

 pulley rim on the same side, and a line drawn through the 

 edges of the cylinder-pulley rim would pass through the 

 edge of the fly-wheel rim on the same side. Allowance for 

 the wind must be made, a heavy side wind requiring a set- 

 ting of the engine sometimes as much as two feet out of 

 line. When the rig has been set during a calm and a wind 

 comes up, it is not necessary to stop, throw the belt and re- 

 set the engine in order to make the belt run on the pulley. 

 Take a jack-screw or lifting- jack, set it obliquely under the 

 front axle of the engine and move it in the direction the 

 wind is blowing until the belt runs properly on the fly-wheel. 

 Move the front end of the separator in the same manner 

 until the belt runs properly on the cylinder pulley. If trouble 

 be experienced in getting the engine in line, this method may 

 be used to correct the alignment until practice enables the 

 operator to set the engine so that the belt will run in the 

 center of both pulleys. This "jacking over" of the front 



