G'day Pau13z,
Wish I could help mate, have you tried contacting a Victa Gold Dealer as you mentioned the other day can they give you any technical documents?
It's a bit of a long shot but maybe you could also try contacting Victa (Briggs And Stratton).
The problem is, as you know they no longer produce the 2 stroke mowers, but you would think they have to at least provide some sort of support and also spare parts for at least 10 years after they stop production?
I don't know about lawnmowers but I think in the motor car industry and some other industries. They usually have parts and support for 10 years after they stop that product.
I noticed on the Victa New Zealand website they still list a new Victa Commando 2 stroke mower for sale. I wonder how long that will stay up on their website? Here's the link:
https://www.victa.com/nz/en_nz/product-catalog/domestic/lawn-mowers/commando-2stroke.htmlEdit: Hmmm, I just checked the Australian Victa site and they also list this same mower at the end? I thought when I checked the Australian Victa website a while ago there was no 2 stroke mowers listed at all. Maybe they found some in the back of a warehouse somewhere? LOL! Or i'm just going mad! lol

Here's the link to Australian Victa website, also showing the same Victa Commando 2 stroke mower:
https://www.victa.com/au/en_au/product-catalog/domestic/lawn-mowers/commando-2stroke0.htmlDon't know guys, I swear Victa didn't have a 2 stroke mower listed on their site the last time I checked a while ago. Maybe i'm going mad or they re-listed a 2 stroke mower again?

Hey don't laugh, I actually bought some items from a well known Australian electronics store from their New Zealand warehouse as they no longer had any stock of the older items I wanted from the Australian warehouse.
But it can get really expensive to pay for shipping for a lawnmower from New Zealand to Australia, that's if they even allow you to ship some over..lol. But hey you never know...haha.
Cheers!