Mixture screw for Dellorto DHLA E carburetors.
Please note that there different screws for the different versions of DHLA.
This particular screw fits the DHLA E series (with the mixture screws in "towers") and which uses an o-ring to secure its setting. So, no further springs or washers.
The matching o-ring can be found under item number 7571.
For your convenience, you can order this o-ring along with your mixture screw by selecting it through the drop-box.
Required quantity per carburettor: 2
This is item number 60 in the drawing.