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The starter circuit is activated when the ignition switch is turned
on. This opens a second switch in the solenoid, permitting a second
flow of electricity from the battery to the starter motor.
The engine cranking circuit is made up of a battery, starting motor,
ignition switch, and electrical wiring. When the ignition switch is
placed in the "start" position, the solenoid windings are energized
and the resulting shift lever movement causes the drive pinion gear
to engage the flywheel ring gear, and cranking takes place. When the
engine starts, an overrunning clutch (part of the drive assembly)
protects the armature from too much speed until the switch is opened.
At this time, a return spring causes the pinion gear to disengage
from the flywheel.
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