Aldo, the GXV160 should have an attachment point for a speed control cable if it was made for a lawnmower. I have a chonda version of the GXV160 that is on a pressure washer and it has no provision for a speed control, because it is intended for a job that doesn't call for one. If yours is the same as mine, you would need to replace one or two parts on the external controls to attach a cable. Also, it has a push-pull choke - to couple it to the speed control for lawnmower use you would need to change a couple of links there too. It may be easiest to just transfer the whole external controls panel from a blown-up ex-contractor lawnmower GXV160. That way you'll get a more predictable result with less trouble (and a few useful spare parts as well).
