It appears that the Sedis drive belt for the K Injector Pump is almost totally unobtanium.
Admittedly I haven't found whether the timing belt shop in UK that Robmac told me about has the right thing.
But I'm inclined to think if it was that simple someone would have already told me the number of the belt.
I have a going belt but if it breaks I would like some way to get it going again.
Surely there's a chain and sprocket option here?