Can anyone tell me how to differentiate between the intake and
exhaust push rods for the subject engine. They both seem about
the same length but one appears as hollow with a hole in both
ends. The parts listing shows a p/n 492229 for the intake one.
The model/type is 260700/0117-02.
The head was removed to reinstall the intake valve seat
that popped loose. At the time of removal I didn't notice that
there was a difference in push rods, only noticed it when I
was about to install them. Seems the hollow push rod may have
some function for transferring oil. Need to know which is the
intake rod and which is the exhaust rod.
I will never cease to be amazed at the variations B&S has come out with in
recent years. I didn't even know they had an OHV 12.5 hp engine.
But to your point, while I obviously am not at all familiar with this
particular engine, the other, higher hp variations of their OHV single has
used an aluminum push rod for the intake valve and a steel one for the
exhaust, why, I have no idea since the aluminum one wears on the rub guide
and eventually bends where it wears thin. Someone said heat dissipation but
it is the exhaust that should be concerned with heat dissipation.
Oh, you could go to the B&S Webb site and look at the parts PDF.
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