The spring your playing with is for sensitivity. One way it will lengthen the time the engine recoops when searching for power the other way will make it way to responsive. It can make the governor hunt if to sensitive. Put everything back to where you got it from and do one adjustment at a time.I don't understand how the governor linkage is suppose to be set up. I moved the spring in between the governor arm and other arm that connects to the throttle cable and thats how I got the rpms to raise above 1440. I adjusted the adjustment screw on the throttle arm (?) until the spring sat loose on the governor arm at low idle. But that seems to be where I messed up the throttle lever. Unless that adjustment screw has to much tension still and is pulling on the throttle lever too much or something. :thanku:
As far as the linkage from governor to throttle shaft, that may have had just enough tension on it to keep it at idle rpm's. Sounds to me like you extended the arm as your spring is now sitting loose. Only time I mess with governor is on a rebuild, I make the other adjutments through the throttle cable and such.
If your trying to raise rpm's, look in the general area of where your cables are attached to the air shroud, to the bottom of that there should a stop screw and nut, reverse the screw and your rpm's come up, turn screw in the rpm's go down, its controling how far the linkage is moving. Do not run these engines over 4000 rpm. 3600 is recommended.