Sabif brake fluid reservoir

[John Larkin]

Can anybody tell me how to open a Sabif brake fluid reservoir (1949 Aprilia berlina)?  I want to fit a new rubber seal kit.  I borrowed the attached image from the Amadei Ricambi website because I do not have a photo of my own unit available.

[will]

You need to unscrew the knob item 14 first.
Then unscrews from the base of the reservoir item 8 from item 18
They can be difficult so leave it with some plus gas or something similar
You will need to remove item 7 to get to the non return valve
 This scan is taken from the Appia parts book

[John Larkin]

Thank you Will.  Much appreciated.
John.