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  1. #1
    New Member
    Join Date
    May 2013
    Posts
    2
    Location
    spartanburg sc
    Tractor
    husqavarna pz3460 34hp kaw

    Default fx921 34hp kawasaki back firing no power

    i was cutting grass and noticed that i started losing power and after bout 10-15 mins it didnt have enough for power for the pto and was bogging down. so i did some seaching on internet and i thought it was the coil or fuel pump so i replaced both of them and its doing the same thing. its almost like the timing is off but i dont know where to start on checking timing on that and the compression is 125-130 on each cylinder any help would be greatly appreciated thanks

    what ive replaced
    2 coils
    2 spark plugs
    clean out carb
    fuel pump

  2. #2
    New Member
    Join Date
    May 2013
    Posts
    2
    Location
    spartanburg sc
    Tractor
    husqavarna pz3460 34hp kaw

    Default Re: fx921 34hp kawasaki back firing no power

    update on my mower i took the valve covers off and found that the #2 exhaust valve was not opening and closing so im guessing the cam lob is gone or something and this engine only has 272 hr on it!!! has anyone had this problem before? thanks

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