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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Mode Rotary Knob

The mode rotary knob operates the defrost control cable that moves to the left end of the heater module. This cable operates a crank lever and the shaft that controls the position of the an air valve in the heater module. The detents at 0 degrees, 90 degrees, and 180 degrees indicate the VENT position, the FLOOR position, and the DEFROST position. By placing the rotary control anywhere in between the two desired modes, the operator can blend the air delivery.