Here's another thread that's of value:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/46756/all.htmlThe starter pulley on your machine would be a retrofit, but that's because it would have left the factory with the 'wire rope' rewind/recoil starter [don't think that Victa gave these starters a model designation].
These were a rather cranky unit that wore very quickly, so most were replaced with the simple pulley as fitted to earlier models, rather than repaired.