Order of execution
![](https://www.audimanual.ru/img/100/2120.jpg)
1. Remove cap from stop screw (1).
2. Connect a vacuum gauge in parallel to the ignition distributor vacuum regulator.
3. Start and warm up the engine.
4. Turn the screw so that the vacuum increases.
5. Unscrew the screw until a minimum vacuum is obtained, then unscrew it another half turn.
6. Adjust the idle speed of a warm engine.
7. Install the cap on the screw.
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