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  1. #1

    650sx Stupid question?

    I bought my 91 650sx used 3 years ago and still do not know what the black spring loaded pull button is attached to the exhaust is please tell me it drives me nuts!


  2. #2
    cheatin' piston popper addicted's Avatar
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    Its a crank case drain incase you flood the motor with water. Most prefer to block it off before it causes a catostrophic air leak.

  3. #3
    785xp's Avatar
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    I was told with mine not to pull on it since it would not reseal properly. Addicted is correct, most people seal it up permanently, however I think that entails pulling the engine.

  4. #4

    Crank Case Drain

    I put one on without pulling the engine. Had to take the exhaust out of the way... It is a pain to get into the tight space, but it can be done as I did it...
    Quote Originally Posted by 785xp View Post
    I was told with mine not to pull on it since it would not reseal properly. Addicted is correct, most people seal it up permanently, however I think that entails pulling the engine.

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