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How to shut off Toro 325D

Discussion in 'Mechanic and Repair' started by fool32696, Aug 10, 2008.

  1. fool32696

    fool32696 LawnSite Senior Member
    Messages: 993

    I had squirrels eat up the better part of the wiring harness. I have a switch set up to engage the starter, but to shut it off I have to push in the plunger on the fuel rail (by hand). How do I engage the shutdown solenoid electronically? There are two blue wires going into it and I tried running 12v power to them.
  2. topsites

    topsites LawnSite Fanatic
    Messages: 21,653


    What I would do, and this takes some tinkering, is:
    1. Get a water-proof aftermarket On-Off switch, and some extra wires.
    2. Hook this switch inline with either wire going TO or From the coil.
    3. Mount this switch somewhere you can reach it.

    There's your kill switch, when you turn it off it interrupts current to the coil,
    just have to remember to turn it On again before trying to start it.

    And I know that's not the way it was, but...

    Other notes: I might recommend soldering and electrical tape, or however you
    decide but the connections need to be solid and insulated.
  3. fool32696

    fool32696 LawnSite Senior Member
    Messages: 993

    I thought of that and it would work great on a gas motor. Diesels don't need electronics to run, once they're going the only way to kill the motor is to cut off either the air or fuel supply. That's why I'm wondering if anyone knows how to rig the fuel shut off solenoid.
  4. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Messages: 376

    Nobody has helped you out yet so I'll throw a few things out there that may get you pointed in the right direction. A lot of those plunger solenoids use three wires. One to pull the solenoid, one to hold the solenoid and a ground. Yours could be the same but grounded through the injector pump.
    When the power is off, usually a spring pushes the plunger closed(shutting off the engine). Why does yours start without power going to it?
    I have one Toro with a bad shut down solenoid. I just ran mechanical linkage and shut it down manually from the drivers seat. Of course this means the saftey switches no longer work.

    Good luck
  5. fool32696

    fool32696 LawnSite Senior Member
    Messages: 993

    With no power to it, it is in the open position so that the motor can run. It seems like a spring holds it open. I'll check for a ground. I've tried powering the wires with 12v both one at a time and both at the same time with no results. The two wires are blue if that helps. None of the safetys work right now so I guess I've got nothing to lose setting up some mechanical linkage to kill the motor. I just hate having to stick my hand in the engine compartment while it's running.
  6. groundsmechanic

    groundsmechanic LawnSite Member
    Male, from Lansing, MI
    Messages: 120

    Pull the 10amp AGC fuse. This should shut off the control unit assembly which controls the fuel solenoid and fuel injection pump.

    This is what I am noticing from the 322-D/325-D wiring schematics I have in front of me.
  7. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Messages: 376

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