Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Starting System: Description and Operation

The starting motor has field coils mounted in the starting motor (yoke) frame. The magnetic switch assembly and the parts in the starting motor are enclosed in housings so that they will be protected from dirt and water. In the circuit, the magnetic (motor) switch coils are magnetized when the ignition switch is closed. The resulting plunger and pinion clutch movement causes the pinion to engage the flywheel gear and the magnetic switch main contacts to close, allowing cranking to take place. When the engine starts, the pinion overrunning clutch protects the armature from excessive speed until the switch is opened, at which time the pinion will disengage.