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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Distributor Advance Unit: Description and Operation
The deceleration spark control system decreases hydrocarbon (HC) emission during vehicle deceleration.
Ignition timing is advanced by the solenoid operated vacuum valve on the
distributor, changing the vacuum supplied to the valve from carburetor ported vacuum to the intake manifold vacuum.