Throttle position for idle on D4

Hi all,
I am about to start my D4 7U for the first time. It has not been started for more than 20 years but has been newly overhauled. I am not familiar with the throttle and can't figure out the position to set it for idle. I don't want to accidentally start it at full throttle. The attached photo shows the governor control. Black knob to the left or to the right for idle?

Thanks for saving my engine from possible harm.

[attachment=14388]Throttle control.jpg[/attachment]

1955 D4 Traxcavator, 1926 Model T Roadster, 1930 Model A Tudor, 1940 Diamond T 201, 1954 JD 40 dozer
www.mervbergman.net

forward -left- for full throttle remember right back is stop cuts off the fuel, not just idle ,

take pre-cleaner off and have a small piece of plywood handy to place over the tube on the air cleaner to shut it down, if for some reason It wanted to run away. Being it’s the first time it’s been started.
Kelly