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  1. #1

    yamaha fx140 motor problem

    I just pulled out the motor from my 2003 fx140, no piston left on the stator side,rod through the side by starter, exaust valves gone on same cylinder, I bought ski used, is this a common failure? engine had sbt sticker on block and I noticed some pitting on other cylinders minor, also crankshaft had what looks like hot spots not on bearing surface but on counter weight area,is this normal or was this a bad rebuild?
    are there any other motors that will work for my machine?

  2. #2
    Nothing like getting air, while sitting in a chair VonnerNIX's Avatar
    Join Date
    Jul 2010
    St. Louis, MO
    If SBT engine, does it still have warranty?

  3. #3
    MR-1 X 2's Avatar
    Join Date
    Feb 2007
    Rancho Santa Margarita, CA
    Unfortunately this is a common problem with SBT rebuilt engines. I have the remains of a SBT FX140 motor without the hole in the side that should work as a core (if you decide to go that route). I also have a complete FX motor with less than 200 hrs.

    PM me if you are interested.



  4. #4
    no warranty, previous owner did not tell me that motor had been rebuilt, but machine is too good to part out

  5. #5
    Join Date
    Jun 2007
    Lake Grove NY
    pwcengines does a fantastic rbld,2 yr no bs warrenty

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