How to Mechanical WEBER?

I describe how to adjust idle screws on WEBER 40 DCOM carburetors at the level of passing the Legal Inspection Tests.

Closest butterfly positions are evenly set firmly.

Open(or close) the throttle valve stopper screw to the position of obtaining 2,200 rpm to continue rotation without idle splaying only with middle speed nozzle splay.

Close all the idle adjusting screws to the closest position, open the throttle valve stopper to keep the 2,200 rpm middle rotating speed if necessary.

Open the idle adjusting screw 1 1/2 to 2 rotation with counter clockwise until the rotation would gain, then the screw position should be marked and closed.

These steps are repeated on the number of cylinders and the opening position of idle adjusting screws are marked promptly.

These marked positions are the indispensable initial standard ones to be relied upon for later gas adjustments.

These original setting positions are utilized for the Legal Inspections and the 0,5mm opened position on screw outer circular surface is the best set position.

No overheating nor rough idling phenomena would be left far away as a ancient memory.

This description is based on individual experiences, so any questions will do, acceptable for friends.