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  1. metalsmith

    JD 4100 Excessive RPM's

    Ok here痴 a new one for me. Working on a John Deere 4100, gear drive, Yanmar 3TNE74 JK1 motor. On start up, the motor goes to full RPMs. No throttle control at all, with excessive black smoke indicating excessive fuel supply. Turning off the switch will not shut it down, the solenoid cycles...
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