If it is the governor, here is pretty much a word for word description on how to adjust the governor from an IT Shop Manual.
" Adjust the carburetor; then with engine stopped, remove cover from the side of governor housing. Turn the governor screw (the upper one) until it just touches its stop (there should be no tension on governor spring). Place operator's hand lever in full speed position and adjust high idle speed screw (the lower one) until it just touches stop. To adjust governor to speeds which follow, start engine and place operator's hand lever in full speed position; turn high idle speed screw (the lower one)in to decrease speed or out to increase speed."
Hope this helps. I don't know much about adjusting carbs yet. If you need to refer to a diagram of the governor and its part numbers/names go to www.caseih.com and look under parts for it.
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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