Hello ptchev

The spring should look like this (below).
These were widely used on many makes of mowers

[Linked Image]

There is a new one on eBay (with new hub):-
http://www.ebay.com.au/itm/VICTA-MOWER-STARTER-IMPULSE-SPRING-AND-HOUSING-MINTO-/162215356430

Hope this helps.
-------------------------
Jack