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  1. #1
    Elite Member smstonypoint's Avatar
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    Oct 2009
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    SC (Upstate) & NC (Piedmont)
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    NH TN 55, Kubota B2320 & RTV 900, Bad Boy Outlaw 61" ZTR

    Default Kawasaki engine problem

    I have a relatively new ZTR (with less than 70 hours of use) with a 31 hp Kawasaki engine (air-cooled 2 cylinder). When I was mowing 3 weeks ago, the engine lost power and backfired after 1.25 hours or so of use. I parked the mower for the night with the intention of staring at the engine the next day. ( I say "stare" because the extent of my mechanical knowledge keeps me from doing much more.)

    The next day, the engine started and ran fine as I finished up mowing for .25 hours or so.

    I mowed again last week, and the same problem reappeared after mowing about the same amount of time (1.25 hours or so).


    Am I way off base in thinking that I have a faulty ignition coil?

    Thanks in advance for any help.

    Steve
    Last edited by smstonypoint; 10-10-2012 at 03:40 PM.

  2. #2
    Veteran Member nybirdman's Avatar
    Join Date
    Feb 2009
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    2,079
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    north of upstate ny
    Tractor
    Kubota L4240 HSTC,L3000DT

    Default Re: Kawasaki engine problem

    check the vent on the gas tank,may be plugged.Maybe fuel starved after running a
    while and then vents itself after sitting.

  3. #3
    Elite Member smstonypoint's Avatar
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    Oct 2009
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    NH TN 55, Kubota B2320 & RTV 900, Bad Boy Outlaw 61" ZTR

    Default Re: Kawasaki engine problem

    Dan,

    Thanks for the info -- I will check the vent. Would a clogged vent cause the backfiring?

    Steve

  4. #4
    Silver Member
    Join Date
    Apr 2008
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    175
    Location
    NY
    Tractor
    MX5100HST FEL

    Default Re: Kawasaki engine problem

    think they had a recall on the fuel filter maybe check there

  5. #5
    Elite Member smstonypoint's Avatar
    Join Date
    Oct 2009
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    3,967
    Location
    SC (Upstate) & NC (Piedmont)
    Tractor
    NH TN 55, Kubota B2320 & RTV 900, Bad Boy Outlaw 61" ZTR

    Default Re: Kawasaki engine problem

    My problem turned out to be a faulty ignition coil. Per the recommendation of my local small-engine repairman (shade-tree variety), I had both coils replaced.

    I have discovered that Kawasaki is very proud of its replacement parts -- $49+ per coil. OUCH!!!!!!!

    Steve
    Last edited by smstonypoint; 11-08-2012 at 10:01 AM.

  6. #6
    Platinum Member
    Join Date
    Jun 2000
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    527
    Location
    Central Mississippi, USA
    Tractor
    Case-International 385

    Default Re: Kawasaki engine problem

    Thanks for replying with the cause of your problem

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