a: Solenoid ~
b: a big relay

What: "The solenoid is like a big relay; when small current is fed to it from the ignition switch, there is an electro-magnet inside that activates and moves, closing the circuit for the big cables so the starter motor gets maximum power straight from the battery. Another function of the solenoid is to pull a lever that kicks the starter gear out, to meet the flywheel teeth, so the engine would turn over. It all haooens at the same time when you turn the key. While it's possible to replace just the solenoid, people usually replace the whole starter."

Writer: Jan Andersson
Date: Oct 1 2013 7:19 PM

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