breather hole

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  • poorbiker
    Senior Member
    • Mar 2013
    • 170

    #1

    breather hole

    Ok, I could go on in blissful ignorance or ask. What is the hole at the top of the case right above the cam for. I know it goes to the breather bore but what for. I see all the passages connected to it. I have purchased gear cover gaskets where there is a hole and where there is not. I have never seen a cover that makes an allowance for this passage way, yet it seems to have some purpose, or was it just part of the machining process.
  • poorbiker
    Senior Member
    • Mar 2013
    • 170

    #2
    Well it must be a really stupid question, but I cant find any manual of mine that mentions it, at all.

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    • Rubone
      Senior Member
      • Aug 2004
      • 4763

      #3
      It is just a leftover from machining and serves no purpose.
      Robbie Knight Amca #2736

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