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    Z421kwt surging at high idle

    I have a Kubota Z421kwt with a Kawasaki Fs730v engine that has about 100 hrs on it. It was surging at high idle. I’m currently recovering from a broken ankle and my wife was going to mow the lawn for me. A friend of ours looked at it for me. He said that he adjusted the idle speed screw and the...
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