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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Idle Speed Control/Nose Switch

IDLE SPEED CONTROL/NOSE SWITCH
The idle speed control maintains steady idle engine speed and prevents stalling, due to changes in engine load, through a servo motor linked with the throttle actuator. A switch mounted on the idle speed motor housing, is closed (ON), when the control plunger is in contact with the throttle lever.