Starter Motor

The starter motor:

• is a wound field, gear reduction, 12 VDC motor.
• has an integral starter solenoid.
• has an overrunning clutch in the starter drive.

It functions as follows:

• When the key cylinder turns to the START position, current flows through the solenoid pull-in and hold-in coils until the solenoid plunger is at the end of its travel. The plunger pulls the lever, which pushes the pinion to engage with the flywheel.
• The contact bridges the solenoid terminals that bypass the pull-in coil. This allows the hold-coil to keep the starter drive engaged and to pass battery current to the starter motor. The starter motor cranks the engine fast enough start it.
• As the key returns to the RUN position, the relay cuts off current to the solenoid. The solenoid disengages the pinion from the flywheel.