Farmall b governor

So I?ve got the typical governor linkage moving but linkage to
carb not moving problem. Took everything apart and spring is
intact but doesn?t seem to have much tension on it. Also how
is the stop screw that stops the lever that the spring attaches
to supposed to be set ? Everything seems to be attached
correctly so I?m a little lost now

What was the original issue, engine not reving up?

Did you check that the rod connecting the governor arm and carburetor is set to the correct length and not binding?

Remember that the governor spring is what tugs the throttle butterfly open, and the governor weights try to tug it closed, and when their forces balance, that's the speed the engine runs, for that throttle setting.

The governor spring will NOT have tension on it with the governor removed, as the lever that the throttle hand lever rod connects to simply flops to the "idle" position once that rod is disconnected.

So, if the spring is intact, (and reasonably correct for the application) and the carb rod is set correctly, and the linkage isn't binding, the engine should rev when the "input" arm is moved, stretching the spring.

One other note, if the weights are stuck or binding or the thrust bearing and sleeve aren't free on the shaft, the engine can't "rev". (For the engine to "rev", the fork must push the thrust bearing and sleeve rearward, and the weights must retract inward.)

Little spring is a "surge spring" or "bumper spring". Start with it fully retracted, and if engine surges, it can be advanced inward a little at a time to dampen the tendency to surge.

Thanks The arm that moves the throttle rod wasn?t tight around the shaft out of the governor! Sure wish I had noticed that prior to disassembling the front of the tractor!!! Oh well !

Hey, you figured it out!

Can't beat that!

On the other hand, if this is the lever that connects to the rod to the carburetor, it's supposed to be held "fixed" to the shaft with a little woodruff key (Woodruff no. 1, 1/16 x 1/2") in addition to being clamped by the 1/4"
"pinch bolt"