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Installing Vacuum Piston

Discussion in 'Motorcycle Tech Talk' started by fiskec1, Feb 23, 2010.

  1. fiskec1

    fiskec1 New Member

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    I'm putting a new vacuum piston on my 40mm CV Keihin Carb and I know basically how it goes accept about 10% unsure on the little brass collar. I believe the jet pin slides through the collar, big side down into the bottom of the piston, then the spring seat sits on top of the pin/collar. Seems the only way it can go.... am I correct?
    fiskec1, Feb 23, 2010
    #1
  3. sarge7

    sarge7 New Member

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    you are correct - and also the slide will only go in one way so don't get the BFH to make it fit.:D
    sarge7, Feb 23, 2010
    #2

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