CHAPTER IV 



LUBRICATION AND ADJUSTMENT OF 

 BEARINGS 



KEEP the bearings of the engine well oiled if you 

 would have it last and not cause trouble. By 

 "well oiled" is not meant that the whole engine 

 should be "swimming" in oil, but that all of its bearings 

 should be always lubricated. It does not take very much 

 good oil to keep a bearing properly lubricated, but you 

 should apply it often and be sure that it reaches the place 

 intended. Many of the oils now on the market are largely 

 adulterated with rosin and paraffine, and, though having 

 an excellent appearance, have poor lubricating qualities, 

 are gummy and dry up in a short time. The oil-boxes on 

 the crank-shaft bearings, and wherever possible elsewhere, 

 should be rilled with wool or cotton waste to retain the oil 

 and keep out sand and grit. The covers of these oil boxes 

 should be kept closed. 



Many experienced operators use cylinder oil instead of 

 machine oil for lubricating the various parts of the engine. 

 Bearings will run cool with it when they cannot be made 

 to do so with machine oil. Since it has considerable 

 "body," it requires only about one-half as much of it as of 



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