So whats the problem with????
Do you understand how the govenor works???
I assume you do not Because if you did you would be able to work out what the problem is caused by.
*flywheel spins making wind.
*Vane is connected to throttle linkage. (thats the black bit, the two tabs, one is flat out, the other is not idle, it is closed. As Bruce said, theres meant to be another srping, thats a govenring spring for idle speed but i dont see that stopping the motor from revving lower then full song.)
*Spring pulls vane toward wind opening throttle.
*Wind pushes on vane closing throttle.
So as you load the motor up, the wind blown onto the vane is reduced to less than the govenor spring tension so the spring wins and that opens throttle. Then as the RPM builds the wind is then blowing more pressure than the spring and that closes the throttle.
As above its the same for the spring for idle.
The shape of the 'cam' on those throttle linkages where the spring hooks on does not see it travel through much of an arc, and arc thats relative in distance to where the other end of the spring is attached on the link between vane and throttle shaft.
