ZTR stalls w/o brake engaged

Discussion in 'Mechanic and Repair' started by bill bass, May 5, 2007.

  1. bill bass

    bill bass LawnSite Member
    Posts: 10

    Hit a metal rod in the yard on my Snapper czt19480kwv. Engine died. Turned off blade , restarted,backed up, engaged blade, engine died. Turned off blade , restarted, and drove it into the garage. Now , it will start with parking brake engaged, but, dies as soon as the brake is released. It also will die (with the brake on) if, I try to engage the blades. I have replaced the blades and they do spin freely. I checked the 4 fuses under the seat and they are all good. The blade was really not that damaged. Any and all ideas are appreciated. Thanks
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    I understand this has nothing to do with the blade hitting that rod but it sounds like a classic case of the seat safety switch taking a dump at the same time.
     
  3. bill bass

    bill bass LawnSite Member
    Posts: 10

    I checked the switch with a vom. It is normally closed, so I have unplugged it from the seat.
     
  4. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Posts: 923

    IF normally closed, did you "jumper" the wires?
    Or am I misunderstanding you "backwards?
    IOW, do you consider "normal" to be when you are sitting on it?
     
  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    Some seat switch plug connectors have a switch made into to them that is activated when plugged onto the seat switch. On some of these units you can't just un-plug the seat switch or jump it because this second switch will not be activated.
     
  6. John Gamba

    John Gamba LawnSite Fanatic
    from ct
    Posts: 10,812


    Are your blades turning freely
     
  7. bill bass

    bill bass LawnSite Member
    Posts: 10

    Normally closed- there continuity through the switch until I sit on the seat. When I depress the plunger on the switch, I lose that electrical continuity. That is why I unplugged it. It does sound like the seat switch circuit would cause it. It used to start without the parking brake applied. I currently have the new blades on, but need to loosen them and adjust to torque. I don't know why it won't move under it's own power. Anyone have a wiring diagram ?
    I do appreciate the help.
     
  8. bill bass

    bill bass LawnSite Member
    Posts: 10

    I'll take a closer look at the seat switch Monday
     
  9. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    The red X shows what I was speaking of with the seat switch plug connector.

    Good Luck


    [​IMG]
     
  10. bill bass

    bill bass LawnSite Member
    Posts: 10

    Thanks for the diagram. Aren't they the tricky ones.
     

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