G'day Gadge
Many thanks for the clarification on that.
The discrepancy between your later Gregory's and the Kirby docs
re oil capacity suggests that Kirby probably copied the USA documents,
whereas Gregory's converted capacity to Imperial.

I mean, 1 Imperial pint is = to 568mls;
1.25 US pints is = to 591mls
I understand that 600 ml is a nice, even measure for both.

For the record, I make available the specs, user and parts lists here:-

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/86685/KIRBY_-_VK30_Engines.html#Post86685

Cheers
----------------
Jack