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John Deer PTO switch and reversing

Discussion in 'Mechanic and Repair' started by greenred, Jun 2, 2008.

  1. greenred

    greenred LawnSite Senior Member
    from IL
    Messages: 916

    I posted this in the tractor section a few days ago. I thought I would try posting it here to see if I had better luck.

    For now I am using a cloths line pin to hold the pto switch up. After talking with my father he was under the impression he had read this could damage the clutch but could not remember why. I dont see how it could as all it is doing is keeping the circuit complete when I put the mower into reverse. If anyone knows otherwise I would appreciate being informed.

  2. Redneckn

    Redneckn LawnSite Senior Member
    Messages: 294

    I've never heard of something like that being bad for the clutch. And generally the way the ciruitry (sp?) is run I cant see how it would. More or less you have 2 wires on that switch that are actually doing something for the pto clutch directly. One will have power in and the other will have power out. The rest of the stuff is pretty much safety/starting related.

    I'm sure there are wires that could be mated and bypass that feature. I dont have any JD schematics here (since we dont do JD) to tell you which wires it may be.

    A side note here. I never recommend people bypass the safety features. You may be fully aware that the device is bypassed but someone else who may happen to operate it may not. Also, every shop/outfit I've ever worked for wouldnt touch one if the safety stuff was missing and/or bypassed.

    On my Toro machine there is a keyswitch under the seat that you turn as soon as you engage the pto and you're good until you shut the pto off. Every machine seems to have a different way of approaching that stuff I guess.
  3. fly-4-fun

    fly-4-fun LawnSite Member
    Messages: 0

    This worked on my late model JD with the reverse lockout switch, you can
    see if it will work on yours.

    If you open the hood you can see the back side of the pto
    > switch. Carefully remove the electrical plug from the back of the
    > swith and note which side of the plug is top so that you can
    > reinstall it the right way. Looking at the back of the switch you
    > will see 3 rows of "spade" connectors. The top row has 3
    > the middle row has 3 connectors, and the bottom row has 2
    > The bottom row are the 2 that make connection when you hold the
    > switch up so that you can mow in reverse. If you inspect the
    > plug closely (shine a flashlight thru it helps) you can see a
    > tang on one side of each connector. That small tang is what holds
    > connector in the plastic housing. If you insert a very small screw
    > driver or some other thin object between the connector and the
    > plastic housing to push the tang,(insert from the connector end
    > push toward the wire) it will release from the plastic housing and
    > you can pull the wire and connector out of the plastic housing.
    > Remove the bottom 2 wires from the plastic wiring connector and
    > connect those wires together. Using a female to female spade
    > connector would work best. Wrap the connection with electrical
    > so that it doesn't short out against anything. Plug the connector
    > back on the switch the same way it came off. If you do it this way
    > you can always undo it and put things back the way they were. This
    > would be handy if you have to take it in for service. Remember I
    > don't advise this and if you bypass any safety on the machine, you do
    > at your own risk!!
  4. greenred

    greenred LawnSite Senior Member
    from IL
    Messages: 916

    Thanks for the information guys. I really appreciate it.

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