Hi, did you remove the throttle cable ? I doubt the governor is in need of adjustment ,best leave it alone! You will just make more work for yourself and chase issues! Have you manually tried to move throttle while it is running? I bet you installed a linkage in wrong spot. What engine is it ? We have two L120 machines with Briggs twins we could take pics of throttle area for you?

 

I did adjust the throttle cable also. Moving the throttle while it is running does nothing. I probably did install the linkage wrong. It is a Kohler CV23. Pictures of the throttle linkage and area would be great then I could compare with what I have.

 

When I say moving the throttle while running does nothing, I mean that it moves and the spring stretches, but it does not affect the govenor or throttle linkage and does not change the engine speed.

 

They will be different though. What does the linkage do when you work the throttle?
Here is the service manual for your engine.
http://www.kohlerengines.com/onlinecatalog/pdf/24_690_07_EN.pdf

 

Adjusting the throttle only stretches the spring. How much should the shaft that the governor arm attaches too rotate? Mine only moves slightly, say from 11 to 1 (on a clock). Could that be stuck?

EDIT: That is when it is not running.

 

EDIT: That is when it is not running.

Are you observing the WOT always when the engine is off? If so, that would "normal" as the throttle lever (on handle) pulls the governor arm which pulls tension on the spring connected to the throttle plate. Once the engine starts, the governor mechanism moves the arm to counter the spring tension on the throttle plate to modulate the engine rpm.

 

I just noticed the same thing. Replaced carb, was testing linkages. Seems like there should be a throttle return spring, but don't see one in the diagram.