The car runs with the choke on for 20 minutes but never drops to idle. Manual Section: Coolant choke adjustment. Procedure: The PDF will show you how to loosen the three retaining screws on the black plastic choke housing and rotate it to the correct index mark (usually "2" for winter, "1" for summer). Without this, your fuel mixture will remain rich indefinitely.

A comprehensive manual provides step-by-step guides for common service tasks. Pierburg 2E Carburettor Manual | PDF | Carburetor - Scribd

: A "piloled" or electronic hybrid variant that utilized a primitive ECU to manage air-fuel ratios, bridging the gap between mechanical and digital systems. The Role of Technical Manuals