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    skyman2112's Avatar
    skyman2112 Posts: 12, Reputation: 2
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    #1

    Jun 30, 2008, 09:56 AM
    20hp briggs governor adjust
    Hi there, my 98 MTD riding mower suddenly developed a governor problem. The engine keeps hunting up and down and won't run at a steady speed. It not too bad at full throttle but won't idle at all. What should I check for? Thanks
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
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    #2

    Jun 30, 2008, 04:20 PM
    Check to see if there is a governor spring missing, loose, or broken.
    skyman2112's Avatar
    skyman2112 Posts: 12, Reputation: 2
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    #3

    Jun 30, 2008, 04:33 PM
    Quote Originally Posted by MOWERMAN2468
    check to see if there is a governor spring missing, loose, or broken.
    Everything seems like its in place spring wise, when I pull the choke about 1/2 way it seems to run OK but if I push in the choke all the way the problem comes back. I even ran some carb cleaner though it for 20 mintues and no help. Thanks again.
    randerson101's Avatar
    randerson101 Posts: 2, Reputation: 1
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    #4

    Jun 27, 2010, 06:39 AM

    If it's idling fast and slow you may have a hole in the diaphram on the carb. Or it may have dry rotted. Take it out and hold it to the light you should be able to see if there are any holes in it. If there are you need to replace it.
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
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    #5

    Jun 27, 2010, 08:16 AM

    Sounds like you have a fuel blockage on the low side.
    Take the carb off clean it out run wires in the little holes.
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