Here is the instruction manual ..... http://www.countax.biz/imagestore/manuals/C-Series%20Briggs%20(00%20-%2002).pdf
Yours should have the Briggs & Stratton engine with Hydrostatic transmission.
Orange UK and Orange S.A. France are separate companies. https://en.wikipedia.org/wiki/Orange_S.A.#BT_Group. This man is the boss https://en.wikipedia.org/wiki/Stéphane_Richard .Contact page ... http://contact.orange.fr