By load I mean place the governor in the clutch cover before you place it on the engine, "not" set the governor in the motor then put the cover on
The arm the 10mm nut retains is not indexed or keyed. Meaning you can put it in any position on the end of the shaft, when you tighten the nut it preloads the governor in the open position basically locking the powervalve closed.
Undo the nut , let shaft shaft return to its home position. Then hold the arm with pliers when you tighten the nut. Drop the pipe to verify the valves are closed , then use pliers to move the arm & see that they open fully & return fully to closed
X2 on water pump seal