328 FARM MACHINERY REPAIR 



13) What happens if the valves are not seating properly? 



14) What happens if the oil line is stopped up? 



15) What happens if bearings are too loose? 



16) What happens when bearings are too tight? 



17) What are shims? 



18) What happens if the governor spring gets weak? 



19) What happens if the governor sticks? 



20) What is the result if the valve stem sticks? 



21) What causes the valves to open too late or too early? 



22) About when should the valves open and close on a small 

 stationary engine? 



23) What happens if the fuel pipe is partially clogged? 



24) What is the effect when the air valve is closed? 



25) What is the result if the carburetor is not fastened to the 

 intake manifold with an air-tight joint? 



26) The feed to carburetors on most tractors and automo- 

 biles is controlled by means of a float. What happens if 

 the float becomes soaked full of gasoline? How remedied? 



27) What is the effect of using dirty water in the cooling 

 system? 



