The inside of the switch contains a gold plated ball, magnet, & small spring that "seats" in a funnel shaped cone. The red button on top pushes the ball against the spring and "seats" to the magnet completing the circuit to run the fuel pump. When enough force or "inertia" is exerted against the switch, the ball is un-seated breaking contact killing the circuit.
Or simply said, yes, it can rattle.
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Friday, August 17th, 2007 AT 10:44 PM