Replacement diaphragm for the pump jet pump on the Dellorto DHLA series carburetors.
The original diaphragms now start to suffer from age and the ravages of aggressive modern fuels which causes the "rubberized textile" material to harden and even crack, causing erratic running of the engine and fuel leaks.
Replacing the diaphragm is then the only sensible option.
Please note that there are different versions available of this diaphragm, with the metal disk on this one measuring 22.1 mm in diameter.
The brass cam stands 12.5 mm tall measured from the face of the disk.
This version was commonly used on the DHLA45D, on the turbo versions of the DHLA and on the DHLA40G, DHLA40H, DHLA40L, DHLA40N and DHLA40R.
This diaphragm is usually combined with the "strong" spring, article number 9663.
Required quantity per carburettor: 1
This is item number 76 in the drawing.
This is an authentic Dellorto diaphragm, produced at the Dellorto factory in Italy, using two layers of tissue provided by Effbe.
This is Dellorto Part Number: 9667
An overview of the available DHLA diaphragms, including the key dimensions, can be found HERE.