Diagram of how the EXUP valve works

[unfazed]

Very nice found! Thank you.
And matches to my real-life measurements:
http://cvieth.bplaced.net/bilder/elektro...TNDF71.JPG
http://cvieth.bplaced.net/bilder/motorra...e_Exup.JPG

I presume your dummy is to simulate the exup when the valve has been removed.

I think the diagram relates to the R1 as I found it last June when trying to resolve a problem with a non starting "stolen recovered R1" and forgot about it until I was looking for a fazer file this morning.