109 



should be kept fairly hot but not too hot. It should be nearly boiling as it 

 comes out of the jacket. 



The engine should be regulated by nleans of the governor to give the 

 proper speed to the pump. To keep down the fuel consumption the gaso- 

 line feed should be so adjusted that there will be a miss in every ten or 

 twelve explosions, and the engine should be worked up to its full rated 

 capacity. 



Over 75 per cent, of the troubles happening to gasoline engines are due 

 to the sparking device. This can usually be remedied by cleaning all con- 

 nections free from oil, scraping the ends of wires, tightening screws or re- 

 placing the batteries. 



Electric Motors. 



Electric motors are reliable and easy to operate, requiring very little 

 attention. 



4. First Cost of Plant. 



The first cost of a pumping plant depends on the grade of machinery, 

 the cost of transportation, the expense of installation. Because of these 

 factors accurate estimates of cost can not be given. However, the ap- 

 proximate cost values given below will be of value to the land owner who 

 is considering the feasibility of a pumping plant. The values given repre- 

 sent the prices at Vancouver and do not include transportation and instal- 

 lation. 



Approximate Cost of Single Stage Centrifugal Pumps. 



The cost of two step centrifugal pumps of the same sizes will be about 

 four times the values given above. 



Approximate Cost of Triplex Single Acting Power Pump. 



