(K) Anti-Stall Diaphragm for Weber 30/34 DFTH Carburetors - 47407.115
Anti-Stall diaphragm for the Weber 30-34 DFTH series carburetors.
Weber equipped the larger, 30-34, versions of the DFTH carburettors with their so-called LoVE system.
This rather romantic name translates into the somewhat more down-to-earth Low Vacuum Enrichment which is basically an anti-stall system.
When the vacuum in the inlet manifold suddenly drops away when the engine is about to stall, this diaphragm is activated and squirts a small amount of fuel through the regular pump jet in an attempt to overcome the impeding stall.
These diaphragms now tend to suffer from age and the ravages of aggressive modern fuels which can cause them to harden and even crack, causing erratic running of the engine and fuel leaks.
Replacing the diaphragm is then the only sensible option.
Required quantity per carburettor: 1
This is letter K in the drawing.
Weber Part Number: 47407.115