yamaha 50TLR 2 stroke noise

Discussion in 'Outboard Maintenance' started by devrep, Jul 22, 2013.

  1. devrep

    devrep Well-Known Member

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    2006 motor but not that many hours. when idling and put in gear (not throttled up) I get a banging that seems to come from the area just below the power head. Have not had any gearbox problems, shifts like butter and runs great. any ideas?
     
  2. Brett

    Brett > PRO STAFF <

    Any thump, bangs or knocks scare me.
    Usually means I'm going to have to pull a block apart. :(
     

  3. rkmurphy

    rkmurphy Well-Known Member

    Mice.

    Just kidding. Post a video so we can hear the sound. I'm with Brett, though...chances are it's not a good thing...sorry buddy. I can only imagine. B.O.A.T.
     
  4. cutrunner

    cutrunner Cert. Yamaha technician

    Stainless prop?
    If so its just driveshaft chatter.
    Basically at low idle its hard for the motor to turn a heavy stainless prop, the second you give it more gas it will go away.
     
  5. rkmurphy

    rkmurphy Well-Known Member

    I've heard this sound before. Didn't consider that...that's why you're the expert and get paid the big bucks ;D

    devrep, I've got a Yammy 90 2 stroke and it does what cut runner just described. Post a video with good sound. If I recognize the noise then you have nothing to worry about.
     
  6. devrep

    devrep Well-Known Member

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    yes! I just put a new stainless prop on, been running stock Yamaha alum prop till saturday and had never heard this noise before and as soon as I gas it the sound goes away.
     
  7. cutrunner

    cutrunner Cert. Yamaha technician

    Dont worry about it, wont hurt anything.
    Its still annoying sounding though
     
  8. devrep

    devrep Well-Known Member

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    thanks for your expertise.
     
  9. cutrunner

    cutrunner Cert. Yamaha technician

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