Fernweh CX500 SOE's cafe build - Page 8
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Thread: Fernweh CX500 SOE's cafe build

  1. #71
    Super Moderator CXPHREAK's Avatar
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    The floats aren't upside down in your picture. Nor can I see anything wrong.

    But those are early floats and hence adjustable. The float may be tweaked too and just need resetting to 15.5 mm
    Rebuilding Handlebar Switches

    Rider 81 500C, Thingy Born a 78Z. Ozdeluxe born an 80 shadow.

    GET A MULTIMETER RTFM I am a CX500. If you maintain me I will run forever.

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  2. #72
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    Quote Originally Posted by CXPHREAK View Post
    The floats aren't upside down in your picture. Nor can I see anything wrong.

    But those are early floats and hence adjustable. The float may be tweaked too and just need resetting to 15.5 mm
    Was not aware they were adjustable :S what's required to adjust them?

    Build Update:

    Ordered myself a pair of vacuum gauges so I can sync the carbies up.
    Last edited by Son of eevil; 03-08-2017 at 07:21 PM.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

  3. #73
    Super Moderator CXPHREAK's Avatar
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    You bend the little tag {minimally, a small movement makes a large change} that holds the needle to the float. The piece the wire retainer is wrapped around.
    Rebuilding Handlebar Switches

    Rider 81 500C, Thingy Born a 78Z. Ozdeluxe born an 80 shadow.

    GET A MULTIMETER RTFM I am a CX500. If you maintain me I will run forever.

    http://cx500forum.com/mediawiki/index.php?title=Main_Page

    The WIKI link for all the good tech stuff. including free FSM's with addendums

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  5. #74
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    Quote Originally Posted by CXPHREAK View Post
    You bend the little tag {minimally, a small movement makes a large change} that holds the needle to the float. The piece the wire retainer is wrapped around.
    Oh ok, that makes sense. I was thinking there might have been some other method of adjustment. Interesting that it has early floats, the carbs are from an 82' TDI model.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

  6. #75
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    Build update:

    Ok, So I pulled the carbs back off and I found that the right side float was actually stuck open and wouldn't move



    I pulled it out and immediately found the problem. Somehow a mosquito has made it way into the fuel system and had gotten stuck on the end of the needle, stopping it from closing properly and jamming it up in the process.




    While I had them out I took the liberty of blocking off the air-cutoff valve (ACV) with a couple of O'rings I cut up. Note: I also blocked off the big one in the middle but using a few MM's of old oil filter O-ring I had laying around, but apparently I forgot to take a photo of that



    I put it all back together and WAH-LA no more leaks.

    I've also decided that the carbs look a little bland and have I pulled off the top and bottom cover from a spare set I had laying about that I sand blasted and painted. I'm not 100% sure if I'll like it yet but we will see.




    One of the problems I have at the moment is with the idle adjuster all the way out we are idling SUPER high, between 3-4,000 RPM. So I'll have to work out what's causing that.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

  7. #76
    Super Moderator CXPHREAK's Avatar
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    Cool on the overflow fix. Though in nit picking your diagnosis I suspect the winged culprit to be a flying ant.

    On the high idle, check your cable slack and that the locknut on the pull cable is present. If he comes off and slides down the cable he'll give you an idle of around 4000 RPM.

    Also check the choke throttle nudger is free to move, but he'll generally top out around 2000 RPM.
    nolimitz likes this.
    Rebuilding Handlebar Switches

    Rider 81 500C, Thingy Born a 78Z. Ozdeluxe born an 80 shadow.

    GET A MULTIMETER RTFM I am a CX500. If you maintain me I will run forever.

    http://cx500forum.com/mediawiki/index.php?title=Main_Page

    The WIKI link for all the good tech stuff. including free FSM's with addendums

  8. #77
    Senior Member nolimitz's Avatar
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    I'll 2nd the cable lock nut. Been down that road.
    83 GLI650 carport find

    1982 GL500i Daily rider
    1982 GL500 Father/Son winter project. The green hornet! Alive and well!

    Mike Nixon's carb book
    Larry Cargill's carb book
    Factory service Manual

  9. #78
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    2nd cable is gone. I'm only using the "pull" cable not the "push" cable (Yes I know it doesn't actually push).

    I will check the cable though.

    edit: just had a look, nut was done up. I did however take some tension out of the line but using the adjustment nut under the throttle. Too late at night to start it up so we'll see how it goes tomorrow. *fingers crossed*

    Bonus picture of carb bits

    Last edited by Son of eevil; 03-09-2017 at 06:47 AM.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

  10. #79
    Senior Member nolimitz's Avatar
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    how in the world does a bug (semi-intact) get far into a carb? Seems it would have to find a home while carbs were apart??
    83 GLI650 carport find

    1982 GL500i Daily rider
    1982 GL500 Father/Son winter project. The green hornet! Alive and well!

    Mike Nixon's carb book
    Larry Cargill's carb book
    Factory service Manual

  11. #80
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    Quote Originally Posted by nolimitz View Post
    how in the world does a bug (semi-intact) get far into a carb? Seems it would have to find a home while carbs were apart??
    I'm afraid he took that one too his grave...

    Another closeup of the bug

    Last edited by Son of eevil; 03-09-2017 at 06:59 AM.
    OCR likes this.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

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