Exmark LZ HP - shuts down when parking brake disengaged

Discussion in 'Mechanic and Repair' started by ohuett, Aug 27, 2011.

  1. ohuett

    ohuett LawnSite Member
    Messages: 16

    I have a Exmark Lazer HP (Model LHP4821KA, S/N 279100) that shuts down as soon as I disengage the parking brake. I replaced the parking brake sensor b/c in my logical brain that was the first thing to try...but it didn't fix the problem. Any suggestions on what to try next or how to troubleshoot the problem? Thanks.
  2. alexschultz1

    alexschultz1 LawnSite Bronze Member
    Messages: 1,577

    .... -_- wth.. maybe try looking at the starter relay switch? there is a kill switch connected to the ignition so that you can only start it when the parking break is on. does it shut off like you turned the key and shut it off or does it bog down and kill itself?
  3. StihlMechanic

    StihlMechanic LawnSite Bronze Member
    Messages: 1,133

    seat switch
  4. ohuett

    ohuett LawnSite Member
    Messages: 16

    Where is the seat switch located? And is there any way to test it to know that it's bad or is it cheap enough to just replace it and see if it fixes the problem?
  5. vencops

    vencops LawnSite Bronze Member
    from NC
    Messages: 1,537

    Where are your controls when it shuts off? My Bobcat will do the same thing, if the control arms are in the folded position (folded in).

    Just a thought.
  6. ohuett

    ohuett LawnSite Member
    Messages: 16

    My controls are all the way out...if I move them in while the parking brake is on or off, it will kill the engine.

    Can someone tell me where the seat switch is located?
  7. corey4671

    corey4671 LawnSite Silver Member
    Messages: 2,931

    Under the seat
    Posted via Mobile Device
  8. Jimslawncareservice

    Jimslawncareservice LawnSite Platinum Member
    from mn
    Messages: 4,143

    There is also a sensor for the arms. So if the brake OS on you pull them in it shuts off. You can jump either of there with a short wire to each one. That way you can eliminate each one and find out which one it is. It may be neither. You could have a pinched wire. Also make sure your seat is all the way down. I have had that happen when I has a couple hps
    Posted via Mobile Device
  9. j-fuhrm

    j-fuhrm LawnSite Member
    Messages: 7

    I had the exact same problem with a Ferris last month. Turned out to be a fuse. Check them first. Use a meter to check it not your eyes. I would also contact X mark tech support. My Ferris guy walked me thru it in about 10 minutes
  10. ohuett

    ohuett LawnSite Member
    Messages: 16

    I've seen in a couple other posts that people check the seat sensor. I guess I'll check that next. Obviously it's under the seat but can anyone tell me exactly where? (I'm a computer geek...not a mechanic...so I appreciate the help)

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