Iseki AC-2 rotovator

I've inherited an Iseki AC-2 two-stroke rotovator, probably made in the 1970s using a Kawaski engine which I have finally got to fire up. But does anyone have or know of a service manual as opposed to an owners operating manual ? The only manuals I can find are in French (Iseki is big in France but never here much)which Google Translate makes a complete mess of usually and anyway cost E49 ! I suspect the governor needs resetting as it screams away unchecked at terrifying high revs. Any thoughts on manuals or governor resetting gratefully received -- before I make a complete mess of it. And anyone with a spare AC-2 they want rid off do let me know ! I think the engine/carb  is the same as the AC-1. Pic is off the web