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Old 04-11-2016, 12:49 PM   #9
stubones99
Guru
 
City: Melbourne, FL
Country: USA
Join Date: Dec 2014
Posts: 1,460
Q1: that switch is a momentary contact switch and I guess they put it there to prevent you from forgetting you had it on, requiring you to hold it down to pump from one side to the other.

Q2: If the fuel transfer pump is a centrifugal pump, it would tend to equalize through the pump. If the pump is a gear pump, it won't since the gears have to be rotating to pass fuel.
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