R5 Turbo 2 ignition timing

Not having any manuals. Can someone help us with where the timing marks are, as there is a casing hole both top and bottom, and we cannot find any corresponding marks. Plus what should it be at idle. Thanks

Dont have the manuals?

...yes you do!
http://theatrearchange.free.fr/index.html

MR221:
http://theatrearchange.free.fr/MR221.zip

there's a diragram with the timing at RPM etc...
as for the timing marks... not sure