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kawasaki trimmer help

Discussion in 'Mechanic and Repair' started by Ziob, Oct 8, 2012.

  1. Ziob

    Ziob LawnSite Member
    Posts: 182

    posting this under my buddies account i picked up two kawasaki trimmers for free kgt27a one is pretty shot for parts and one has very low hours good condition.....put a new spark plug in it and it starts right up....runs....idles fine but has absolutely no balls whatsoever.....even floored it just doggs it and does get enough rpms or power to even get the head going well enough to use. tried cleaning the carb with no luck.....is this a carbeurator issue where i could slap a new carb on and solve the problem or is the engine cooked and just has no compression anymore to have any power? like i said it'll start up idle the whole nine yards but when you floor it it just boggs no power. got them for free just wondering....worst case i junk them.
  2. macgyver_GA

    macgyver_GA LawnSite Senior Member
    Posts: 826

    Sounds like you got the spark issue taken care of so then that leaves fuel.

    My Kawasaki bogs a little bit until it's warmed up. Have you let it warm up fully before giving it full throttle?

    I usually gradually increase the throttle until it gets to WOT and runs without bogging. Then it's warmed up.
  3. CLS LLC

    CLS LLC LawnSite Senior Member
    Posts: 487

    Your issue is most likely low compression. First you need to remove the exhaust and clean out the carbon from the exhaust port and muffler. Then you can do a compression check. If it is below 80 psi, you're screwed. If it's below 100 psi, you may have another issue, but it's still not in great shape.
  4. dutch1

    dutch1 LawnSite Silver Member
    from Jayhawk
    Posts: 2,231

    Several things to check. Here's a few:

    Clean/free flowing fuel filter.
    Fuel lines in good condition--softened fuel lines may collapse when engine calls for fuel.
    Obstructed anti spark screen in muffler or partial blockage in exhaust port.
    Pump or metering diagphram in carb weak/stiff.
    High speed jet in carb partially obstructed.
    Check for adequate compression, although normally low compression will cause had starting as well.
  5. dboyd351

    dboyd351 LawnSite Bronze Member
    Posts: 1,101

    In addition to what Dutch said, you might want to check for a loose or cracked air intake. If it is sucking air it can't make power, either.
  6. Ziob

    Ziob LawnSite Member
    Posts: 182

    maybe the exhaust is glogged i'll do a compression test if i can find the damn tester can't see both engines being shot especially with one being relatively new. All other parts are fine......
  7. xstatikplus

    xstatikplus LawnSite Senior Member
    Posts: 294

    most likely the exaust port we run kawi trimmers and every once in a while we have to take the muffler off and clean it out due to lack of power. I'd try that first

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