Hi folks,
My 1977 Gregory's #103 Victa workshop manual says approximately one pint, for the VK30.
That would be an Imperial Pint, not US! We didn't know much about US units of measurement here, in those days. 1.25 US Pints is pretty close to 1 Imperial Pint, as a US Pint is 16 US Fluid Ounces.
In practice, the correct fill level for these, is just short of overflow.
We used to use the technique of fill to that level, then rock the crank so as to 'suck down' the oil, then allow it to stand a short time, to establish the true level.