I am
well aware that among young engineers the impression prevails that a
valve is a wonderful piece of mechanism liable to kick out of place and
play smash generally. Now let me tell you right here that a valve (I
mean the ordinary slide valve, such as is used on traction and portable
engines), is one of the simplest parts of an engine, and you are not to
lose any sleep about it, so be patient until I am ready to introduce you
to this part of your work. You have a perfect right to know what is
wrong with the engine. The trouble may not be so serious and it is
evident to you that the engine is not running just as nicely as it
should. Now, if your engine runs irregularly, that is if it runs up to
a higher speed than you want, and then runs down, you are likely to say
at once, "Oh I know what the trouble is, it is the governor." Well,
suppose it is, what are you going to do about it, are you going to shut
down at once and go to tinkering with it? No, don't do that, stay close
to the throttle valve and watch the governor closely. Keep your eye on
the governor stem, and when the engine starts off on one of its high
speed tilts, you will see the stem go down through the stuffing box and
then stop and stick in one place until the engine slows down below its
regular speed, and it then lets loose and goes up quickly and your
engine lopes off again.
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