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Kawasaki 23 hp fh-680 v problem

Discussion in 'Mechanic and Repair' started by EARTH5, Jan 20, 2013.

  1. EARTH5

    EARTH5 LawnSite Member
    Posts: 124

    I gave my laser z hp engine to a friend to rebuild. It's a Kawasaki fh680 v 23 hp. Well he is a professional motorcycle mechanic and took the entire engine apart and started making a parts list which I ordered all except what he called crank or main bearings.
    I looked online and figured out that they don't have a main bearing on crankshaft instead a sleeve that fits in the cases and the crank rides on that.
    So my problem remains he removed only one of these ( thank god) and Kawasaki doesn't offer it as a separate part. They want you to buy the entire case for $450.
    Does anyone know where I can find that sleeve/ bearing or any other help or solutions would be greatly appreciated. Thanks :dizzy:
     
  2. pugs

    pugs LawnSite Gold Member
    Posts: 3,018

    There was a post on this a while back. I forget what the outcome ended up being but try doing a search in this particular forum(Mechanic and Repair).

    Honestly if those are in need of replacing its time for a new engine.
     
  3. laman

    laman LawnSite Senior Member
    Posts: 335

    how many hours on this engine?
     
  4. ricky86

    ricky86 LawnSite Bronze Member
    Posts: 1,700

    Did he remove it, or did it fall out during teardown? If it fell out, I'm with Pugs. New engine.
     
  5. D C

    D C LawnSite Member
    Posts: 82

    If you're doing a rebuild and can replace the worn bushing, what is gained by spending a LOT more on a new engine?
     
  6. D C

    D C LawnSite Member
    Posts: 82

  7. pugs

    pugs LawnSite Gold Member
    Posts: 3,018

    A 3 year warranty. A new starter motor. A new carb with all new linkages and no wear on the shafts or body. I would hope the engine rebuilder would be installing new valves and cutting the seats but who knows...so a new engine would have all of that new.

    Also the newer engines have a better system of oiling that upper bushing that seems to be a problem in the older ones where they oiled it through the crankshaft instead of through the block as on the newer versions.
     
  8. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    I'm with you guys on this one....
    If the bushing fell out of the block during disassembly....its junk...
    The gearset would have wear issues ..and the rods would be sloppy..
    A Boomerang engine...any re used parts would come back on you...
     
  9. teckjohn

    teckjohn LawnSite Senior Member
    Posts: 258

  10. teckjohn

    teckjohn LawnSite Senior Member
    Posts: 258

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