Pump Diaphragm for Solex PBISA carburetors.
These diaphragms now tend 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.
Perfectly within the tradition of Solex a variety of different diaphragms were used throughout the Solex PBISA series and it is hardly documented which version used which diaphragms.
On top of that, they are generally NOT interchangeable...
So, please compare your old diaphragm VERY carefully and in detail with the one on offer here.
The main characteristics of the diaphragm on offer here are:
- Diameter of the steel dish: 22 mm
- Height of the cam, measured from the dish: 15 mm
- Cam version: spring loaded tip
Required quantity per carburetor: 1
This is number 11 in the drawing.