Throttle control / governor question

[RugHead]

The speed control under the steering wheel really only does anything in the last 1/3 of travel on my 1945 2N. i.e. I can move it from zero thru 2/3 of the range with no effect, then the last 1/3 seems to do something. Is this typical or does it seem like something is way out of adjustment? Thank you.

 

[Bruce (VA)]

There are three ways to check to check the operation of the governor. Get the throttle lever at it's lowest point (engine ideling) Then, start tapping the throttle lever slowly open. How far does the throttle move before the engine speeds up? Lack of low speed throttle response (like about 1/3 of the throttle) is the classic symptom of a bad or out of adjustment governor. Next test, put it in gear at about 1/4 throttle, put your foot on both brakes & let the clutch out. The engine should throttle up as the governor arm opens the throttle plate in the carb to compensate for the load on the engine. Next test, w/ the tractor running, pull on the rod going to the carb; does the governor pull back? If that does not work, get out the I&T FO4 manual & check out the 'adjusting governor' paragraph. Finally, before I paid $200 or more for a governor, I'd pull it off & open it up. It could just need new balls & races.
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[RugHead]

Thanks for the reply. Starting from idle, I can move the lever well over half (probably close to 3/4) of the range before any change in engine speed/sound. I will dig into the governor. Service manual should arrive this week. Mean time I'll try your troubleshooting advice. -k