Hi Gadge,
Thanks once again for the info.
Firstly I'll need to check how much water got in through the open tickler port whilst cleaning.
It's impressive how you pick out the model year from the outline drawings. A large number are much of a muchness to me (still).
However I can see where you're going with the carby. Have the earlier Gregory's Small Engines book so can now see it's a 3S.
Regarding the possible engine vs cowling vs sticker change:
The 3S carby with the taller float bowl extends into a small purpose-designed (even with drain hole) recess in the base. So along with the Victa spec for a 3S on a Victa I think the engine is correct. That leaves either the stickers or the cowling. Given there are two pace stickers on the cowling and several cowling bolts missing I'm going with a cowling swap for now.
Wonder if that means the impulse starter got swapped too?
Thanks again,