18. The ignition timing and idle speed must be adjusted correctly.
19. Open the throttle valve and turn the choke cam so that the adjusting screw rests on the highest protrusion of the cam.
20. The air damper must be fully open.
21. Start the engine without touching the gas pedal.
22. Adjust the fast idle speed to the desired value using the adjusting screw (see photo).
Photo 6B.22. Fast idle speed adjustment pin (shown by the arrow) on a 2B6 carburetor.
23. When finished, secure the adjusting screw with a dab of paint.

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