See this recent thread in the 'Q's on Engines' section
HERE too; it has some good info/link on servicing the Vector carbies. Parts are available out of the US.
Carby cleaner is something to be very careful with here, as the bottom end of this carby is all plastic.
The original shaft diameter would be 7/8", just over 22mm. 3.75hp Briggs engines are available with this diameter shaft, if you go for a new engine, and in 50mm length as Victa use. It will do the job, no problem.
I see a new 3.75 is as cheap as $160-170 delivered, on FleaBay.
