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Static Governor Adjustment:
Does not matter what type of engine, if it has an internal governor the static adjustment is the same for all.
Locate the governor shaft where it comes out of the engine block. Loosen the arm that is attached to the shaft. Hold the throttle on the carburetor to the wide open position and note which direction the arm attached to the governor shaft moves. While holding the throttle wide open rotate the governor shaft in the same direction it would turn to open the throttle, turn it until it stops. Tighten the arm back down to the governor shaft. Thats the procedure for making the static adjustment on any internal governor, horizontal or vertical.
Note: you can not "play" with this adjustment to change the governed operating RPM's, this is accomplished by changing the the tension applied to the governor. In order for the governor to operate properly, it must be adjusted as described!