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

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Mechanical Specifications

Idle speed approx. 500 rpm with shift lever in "P" or "N" and all accessories turned off. The idle On-Off ratio should be 30 - 70 %.
Ignition Distributor Bosch Designation
0 237 401 012
Adjusting Value with Vacuum
5 at idle Degrees Before Top Dead Center At RPM (deg BTDC @ rpm)
Centrifugal Advance without Vacuum
10 - 14 at 1500 Degrees Before Top Dead Center At RPM (deg BTDC @ rpm)
22 - 26 at 3500 Degrees Before Top Dead Center At RPM (deg BTDC @ rpm)
Vacuum Adjustment Towards Retard at idle speed
N/A
Vacuum Adjustment Towards Advance at 3000 rpm
18 - 22 at 3000 Degrees Before Top Dead Center At RPM (deg BTDC @ rpm)
Distributor Installation Value at Cranking Speed Without Vacuum
5 Degrees Before Top Dead Center (deg BTDC)