Exmark Turf Tracer engine cutting out!

Discussion in 'Mechanic and Repair' started by 4curbappeal, Oct 29, 2009.

  1. 4curbappeal

    4curbappeal LawnSite Senior Member
    Posts: 761

    I have a 52" Exmark TT wit a 23 hp Kaw engine. The engine only has about 200 hrs on it, but the mower prob has close to 1000.

    Today while cutting I noticed that the engine would cut off for a couple of seconds usually while turning or backing up at the end of each pass. I have only had the mower for a couple of weeks and have noticed once or twice before today. It would also do this occasionally when backing up by squeezing the ECS controls.
    I am by no means a mechanic, nor do I claim to be, but it seemed fuel starved or maybe even a bad wire or safety switch. I really have no clue! I will replace the fuel filter tomorrow and see if this helps, but wondered if anyone could help diagnose the problem.

    Thank you again to everyone in this forum for your help. Having a bunch of mechanical issues with 3 of my mowers this year and would probably go crazy and broke if it weren't for this site!

    Thanks again,
    Tim
     
  2. sjessen

    sjessen LawnSite Gold Member
    Male, from Knoxville, Tn
    Posts: 3,076

    It could be the safety switch associated with the operator presence control.
     
    ericg likes this.
  3. mowerknower

    mowerknower LawnSite Senior Member
    Posts: 766

    Id be looking at opc switch or the brake switch. you can bypass the brake switch and it will not affect the safe operation of the mower (its just there to make sure you dont drive with the brake on) If bypassing that doesnt help then try replacing the opc switch.
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    If it hasn't already been done, Un-plug the seat safety switch and put a jumper wire across the plug connector contacts then test run the unit.

    If it no longer acts up replace the seat switch, Do NOT leave it jumped for your's and other's safety.

    If it still acts up with the seat switch jumped, Look on the engine near the dipstick tube. See if there's a black oversized pill capsule looking device with two wires coming out of the top, This is a mercury switch that kills the spark if the unit is operated at too much of a angle. When going bad they can cause what you described on flat ground, Remove the one wire that is grounded to the engine then test run again.

    If it no longer acts up replace it, Again for your's and other's safety.
     
  5. sjessen

    sjessen LawnSite Gold Member
    Male, from Knoxville, Tn
    Posts: 3,076

    His mower is a turf tracer not a lazer.
     
    ericg likes this.
  6. mowerknower

    mowerknower LawnSite Senior Member
    Posts: 766

    Retro,
    You are a smart man. Probably one of the better Techs out there. But this time you are dead wrong. A turf tracer does not have a seat, it is a walk behind. Atleast you made me feel good about myself.
     
  7. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    It's been a long day and I've been in need of new glasses for a while now but haven't taken the time.


    Least I did do something good in this thread..... Made you feel better about yourself..... [​IMG]
     
  8. 4curbappeal

    4curbappeal LawnSite Senior Member
    Posts: 761

    Does anyone have time to describe to me how to bypass the brake switch? Again, I greatly appreciate everyones help. Thanks!

    Tim
     
  9. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    how many wires on the switch? two wire just jump it if it needs to normally closed.
     
  10. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Posts: 360

    I've had this problem before and it turned out to be a bad ground. Its certainly possible to have a bad ground on a piece of equipment thats been repowered.

    Scott
     

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