The 1977 Datsun 280Z starting system consists of battery, ignition switch, starting motor and solenoid. When the switch is turned on, the battery current flows coils of the solenoid and magnetizing the solenoid. The plungger is pulled into the solenoid so that it operates the shift lever to move the drive pinion into the flywheel ring gear. Closing of the solenoid switch contacts causes the motor to crank the engine and also cut out the “series” coil of the solenoid, the magnetic pull of the “shunt” coil being sufficient to hold the pinion in mesh after the shifting has been performed.

The following diagram shows electrical schematics of the 1977 Datsun 280Z starting system.

datsun 280Z starting system diagram

Legend:
1. Ring gear
2. Shift lever guide
3. Armature
4. Battery
5. Field coil
6. Stationary contact
7. Movable contactor

8. Shunt coil
9. Plunger
10. Ignition switch
11. Series coil
12. Torsion spring
13. Shift lever
14. Pinion



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