KLR650 Carb Hose Routing

Discussion in 'Thumpers' started by Drumboy, Jan 13, 2013.

  1. Drumboy

    Drumboy Been here awhile

    Joined:
    Oct 10, 2008
    Oddometer:
    218
    Location:
    Houston
    I'm working on getting a 99 KLR650 running again and when I got it it was all taken apart. I've cleaned the carb and now I'm trying to figure out where all of the hoses go. I know that 2 is where the choke (enricher) screws in and 4 is the main fuel line from the bottom of the petcock. Where do 1 & 3 go?

    [​IMG]

    Also, where does the line on the back of the petcock go?

    Thanks
    #1
  2. GAS GUY

    GAS GUY MILE EATER

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    1 is your vacuum port.It goes to your petcock.
    3 is your vent line.It goes down to the bottom of the bike and remains open to atmosphere.
    #2
  3. Beezer

    Beezer Long timer

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    "3 is your vent line.It goes down to the bottom of the bike and remains open to atmosphere.".... along with your "T" mod. either that or leave it off.
    #3
  4. XDragRacer

    XDragRacer Long timer

    Joined:
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    Good point; the Generation 1 KLR650 engine, without a tee mod, is more reliable without any carb breather hose at all . . . at least, during water crossings 10" or deeper! (Do not ask how this fact is known. :rofl)
    #4
  5. XDragRacer

    XDragRacer Long timer

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    Rather, "2," I think.

    Highly recommended: http://www.gadgetjq.com/keihin_carb.htm

    "All you always wanted to know about the Keihin CVK40 carburetor, but were afraid to ask!"
    #5
  6. Drumboy

    Drumboy Been here awhile

    Joined:
    Oct 10, 2008
    Oddometer:
    218
    Location:
    Houston
    Oops, I meant 2.
    #6