25 hp Kawasaki skipping

Discussion in 'Mechanic and Repair' started by arl250, Oct 18, 2012.

  1. arl250

    arl250 LawnSite Senior Member
    Posts: 278

    I have a yazoo kees zero turn with a fh721v Kawasaki engine and it sounds just like its skipping and has no power under a load then sometimes its runs better but its no right..today I put new fuel filter and plugs and it helped but still isn't fixed and I need it the leaves are falling and my peco bagger is mounted on this mower... oh yea and valves are adjusted right. Any help is greatly appreciated I need it fixed fast... thanks
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  2. herler

    herler LawnSite Fanatic
    Posts: 5,145

    1. Spark plug gap .025
    2. Air filter
    3. Test for spark continuity on either side.
    3b. Ignition coil (there are two).


    The only other possibility I can think of is a sticking choke mechanism.
     
    Last edited: Oct 19, 2012
  3. arl250

    arl250 LawnSite Senior Member
    Posts: 278

    Ok air filter is good I will check other stuff today... any chance its in the carb? It does clear up a little with choke about half way out
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  4. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Somebody ought to put a sticker on the cowl of EVERY Kaw twin clinder engine...
    "WE USE JUNK COILS..REPLACE EVERY 100 HOURS...."
     
  5. arl250

    arl250 LawnSite Senior Member
    Posts: 278

    This engine has 860hrs do you think it would be the coil if it clears up some with the choke
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  6. I MOW ALONE

    I MOW ALONE LawnSite Bronze Member
    Posts: 1,898

    nope. if it runs smooth with some choke i bet carb is dirty. also when was the last time you adjusted valves ?
     
  7. arl250

    arl250 LawnSite Senior Member
    Posts: 278

    It was about10hrs ago I will teat into the carb this weekend
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  8. herler

    herler LawnSite Fanatic
    Posts: 5,145

    You could give it a quick burst of starting fluid just to see if it takes off, then if it does you can probably rule out the coil(s), thing is I have had this exact sputtering problem with my Kawasaki before but now I can't remember what it was to fix other than I just had to keep fooling with it and in the end it turned out to be something simple...

    One other thing is to check inside the spark plug wire to make sure the boot and clip is all connecting to the spark plug, sometimes those clips work loose off the wire end.
     
  9. 44DCNF

    44DCNF LawnSite Bronze Member
    Posts: 1,459

  10. arl250

    arl250 LawnSite Senior Member
    Posts: 278

    Thanks everybody for all the info im planning to fool with it today or tomorrow I will let ya know what I come up with
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