Will give you that info tonight but have done a bit of research, the dial next to the air filter is the throttle control, kill switch etc. but I didn't notice it doing much. It is connected to the governor linkage but doesn't seem to do a great deal no matter how you turn it, also notice that the dial has a split in it. No matter how I turned the dial it still produced a spark so looking for a way to stop the machine. Can get a manual throttle for it and may go down that track if don't get any joy out of the dial set up, I think these are automatic throttle/priming machines.