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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Engine Speed Detecting Circuit

Fig. 7 Idling Stabilizer Amplifier Adjustment Screws.:





1. Start engine and run A/C system.
2. Check that compressor clutch disengages at 600-700 RPM.
3. If cut-off RPM is too high, turn adjusting knob, Fig. 7, clockwise. If cut-off RPM is too low, turn adjusting knob counterclockwise.