Hello. I've recently bought a B&S PXi-1000 from Ebay. I'm using it for a hovercraft project, not for installing to a lawn mower. But I'm a bit confused as to where the throttle control for the engine is. I'm still a bit of a noob when it comes to engines. There is a manual included, but the illustrations and the actual engine itself are slightly different. In the manual it shows a throttle control, but I can't find it on the actual engine. I've attached a pic of the engine. Any help would be gladly appreciated.