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  1. #1
    New Member
    Join Date
    Dec 2013
    Harper texas
    Farmall and massey ferg.

    Default Ford 9n/8n

    I'm working on this after customer tried to repair himself. It's a 9n tractor and customer says the engine is from an 8n . He replaced the carb and the governor. It idles but you move the throttle more than 3 notches it runs wide open. So how do i adjust this? Thanks for any help.

  2. #2
    Platinum Member
    Join Date
    Jul 2015
    yelm washington
    MF 1734E

    Default Re: Ford 9n/8n

    Check to make sure the governor linkage is attached. If it is then disconnect it temporarily and work the governor arm back and forth a few times to free it up if it is sticking. I had this problem with my 8n, if that does not work you may need to overhaul the governor. The throttle lever tensions a spring attached to the throttle plate in the carburetor, the governor pulls against the spring, if the linkage is not set up correctly, or the governor is not working, you end up with the condition you describe.

  3. #3
    Platinum Member
    Join Date
    Jan 2012
    Great North of Michigan
    Kubota L2500, Oliver Super55

    Default Re: Ford 9n/8n

    I had a similar situation with one of my older tractors and it was the return spring on the linkage from the carb to the governor was stretched out. Disconnect the linkage to the governor hold the linkage that it connects to on the carb and then try advancing the throttle and see if it over revs. If it doesn't than it's on the governor side of the house.

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