Mixture screw for Dellorto DHLA G series carburettors.
Please note that there different screws for the different versions of DHLA.
This particular screw fits the DHLA40 G ONLY !
You can find this reference on the left hand gas tube of your carb where "DHLA40" is cast-in, followed by a letter. If this letter is a "G", this is the correct screw.
Required number per carburettor: 2
This is item # 60 in the drawing.