Welcome to the forum Caol. Glad to have you join us.
I'm not familiar with your particular snowblower, but I know MTD customer service has always been helpful to me in finding information on older equipment of theirs I've had. You can usually find owner's manuals and parts lists online at their web site. It does require the model and serial number to do a search. Since yours is a European model, maybe MTD Europe has a similar sort of service.
I did find this, which seems to be pretty generic, and I don't know what years it covers.
You should be able to find the manual to your Tecumseh in here somewhere.
CPD Online | Dealer Resources
Hope that helps a bit, let us know how things go.