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  1. #1

    Join Date
    May 2012
    Posts
    8
    Location
    Monkton, MD
    Mower
    Ferris

    Electrical Problem: Ferris Mower

    I have a IS1000Z zero turn Ferris mower with 800 hours that I maintain myself. Two weeks ago while in use, I had the mower die while stopping to open a gate. The mower would not turn over. I obtained a schematic on line and went over the machine. The seat switch, parking brake switch and neutral switches checked out on the continuity meter. There are two relays and they seemed to work when voltage was applied. The key switch checked out on the meter. When I wired the start terminal of the key switch to the starter solenoid, the engine turned over but would not fire. I began to trace the circuits and things seemed OK except for when I got to one circuit at the parking brake switch which read 84 ohms instead of zero. Eventually it occurred to me to pull both relays out and connect the start terminal of the key switch to the starter solenoid. The mower runs fine now with no safety switches working. Maybe no switches is a good thing and I should stop here. I'll go back and test again, to see if I have the same results but any random thoughts would be appreciated.
    Thanks,
    Bill

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  3. #2

    Join Date
    Jul 2011
    Posts
    963
    Location
    Connecticut
    Mower
    Scag Tiger Cub, Ingersoll 4018, Hustler X-ONE MoJack Pro

    Re: Electrical Problem: Ferris Mower

    I do not recommend bypassing any safety switches for other than troubleshooting. One or both of the relays are part of the cranking circuit and will not energize unless all the safety switches are operational. Leaving safety switches bypassed is a good way to get hurt.
    Last edited by Mad Mackie; 05-05-2012 at 11:20 PM. Reason: more info

  4. #3

    Join Date
    May 2012
    Posts
    8
    Location
    Monkton, MD
    Mower
    Ferris

    Re: Electrical Problem: Ferris Mower

    Quote Originally Posted by Mad Mackie View Post
    I do not recommend bypassing any safety switches for other than troubleshooting. One or both of the relays are part of the cranking circuit and will not energize unless all the safety switches are operational. Leaving safety switches bypassed is a good way to get hurt.
    Thanks for your thoughts. Any idea as to what the problem is?

  5. #4

    Join Date
    Jul 2011
    Posts
    963
    Location
    Connecticut
    Mower
    Scag Tiger Cub, Ingersoll 4018, Hustler X-ONE MoJack Pro

    Re: Electrical Problem: Ferris Mower

    Get a wiring diagram for your specific model and serial number machine.
    Usually the seat switch, both travel lever switches, and the parking brake switch are involved with at least one relay in the engine cranking circuit. This is all wired thru the PTO switch.
    All or most of the same switches are involved in the engine running circuit also and probably the second relay.
    The engine makes it's own spark just by cranking and the ignition circuit is grounded by the keyswitch to shut it down when in the off position. While running, when any safety switch is not functioning or not lined up correctly in the circuit, when the operator gets off the seat the engine will be shut down by the safety circuits.
    Last edited by Mad Mackie; 05-05-2012 at 11:49 PM. Reason: corrections

  6. #5

    Join Date
    May 2012
    Posts
    8
    Location
    Monkton, MD
    Mower
    Ferris

    Re: Electrical Problem: Ferris Mower

    Thanks for your input, Mad Mackie. I have the correct wiring diagram in hand. There are two circuits going through the seat switch. One is the starter motor. I'm pretty happy that that on is working. The other un grounds the magneto and kills the PTO if the switches are not arranged in a proper way. I've pulled the PTO switch out of the connector, but that had no effect. I'll go over that circuit again, but not today. I have too much tall grass to cut. Thanks.

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