2. Clamp the carburetor in a vice so that the idle mixture adjustment screw (MAS) is at the top.
3. Drill a 2mm diameter hole in the casting surrounding the MAS screw. Then drill the same hole again with a 3mm diameter drill.
5. Install the carburetor on the engine.
6. Run the engine at a higher speed than idle until the coolant temperature reaches 80-95°C.
Adjustment conditions:
Lighting, electric cooling fan and all consumers are switched off, the gearshift lever is in neutral position.
7. Let the car drive for 5 minutes at a speed of 48 km/h or let the engine run at a speed of 2000 to 3000 rpm for more than 5 s.
8. Let the engine run at idle speed for 2 minutes.
9. Set the CO level with the engine running at idle to the value specified in the specification using the idle speed adjustment screw (SAS-1) and the idle mixture adjustment screw (MAS).
10. Install the plug in place to protect the idle mixture adjustment screw.
