Over the weekend I got up.....
?Then I broke out the 1960 Ch. Truck operators manuel .. and I Quote HAND THROTTLE CONTROL
Pulling out on the knob opens the carburetor throttle to provide a uniform ( constant until knob is pulled further, or pushed in to any position) engine speed above the idle setting. It is generally advisable to pull the hand throttle control out slightly when starting the engine especially if the engine has a tendency to stall a time or two after starting."
Also my tranny is four on the floor .
Ken