Scag turf tiger surge kawa 29hp dfi

Discussion in 'Mechanic and Repair' started by jdslucky, Jan 21, 2014.

  1. BigFish

    BigFish LawnSite Platinum Member
    Messages: 4,189

    Actually I meant to say the Fuel System pages 2-8 thru 2-10
  2. jdslucky

    jdslucky LawnSite Member
    Messages: 8

    Looks like soccer practice with the kids will consume tonight's work time. There is two brackets that in a way "scissor" with adjustment. I really hate how the throttle is only raised via 1 spring. Seems to be a headache in some other threads I've read. throttle rod spring is also present and in good shape. Kaw manual for sure. Thank you guys for the input for the all mighty thought process. I will report as soon as I can
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  3. jdslucky

    jdslucky LawnSite Member
    Messages: 8

    No go! Adjusted governor and it ran great. Even pushed on the arms to disrupt the rpm and it settled right down. Shut the thing off, turned it back on then it started the same ol surging crap. I also loosened gas cap to see if it was drawing a vacuum. No change. So frustrating!
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  4. bvillefarm

    bvillefarm LawnSite Member
    Male, from Batesville,IN
    Messages: 32

    We have had issues with this before. I would check to see if the engine is showing any fault code. Usually, I have found it to show an atmospheric pressure code. If I remember correctly, it shows a fault code of 22. Try turning the key to the on position and let sit for a few seconds, then try starting it.
  5. jdslucky

    jdslucky LawnSite Member
    Messages: 8

    bfarm, yes i have checked for fault codes, when turning on the ign it will not flash a code. in addition to checking for codes, i have checked powers and grounds to the map sensor and have monitored sensing voltage to check for correct voltage atmospheric and under load. both check good against repair manual.

    the only thing that i have done that has changed anything was install a stronger and weaker spring that goes between throttle brackets and governor brackets. both the stronger and weaker spring made the surge faster. I recommend him to try replacing the $2.68. If that fixes it, all i can do is laugh at this point!
  6. JTV

    JTV LawnSite Member
    Messages: 1

    Pinch off the fuel return line. If surging stops, replace the fuel regulator.
  7. jdslucky

    jdslucky LawnSite Member
    Messages: 8

    Has new regulator, no change when pinched off
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  8. djagusch

    djagusch LawnSite Platinum Member
    from MN
    Messages: 4,358

    Is the throttle shaft worn? It will wear over time and air will suck through the gap. Put some grease on thick on both sides of the shaft and see if it solves it.
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    I MOW ALONE LawnSite Bronze Member
    Messages: 1,964

    ever fix the problem? having same issues
  10. xc2010

    xc2010 LawnSite Member
    from STL
    Messages: 47

    I have a 29dfi turf tiger going through this right know. Any resolution to the issue?

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