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Restoration project|1982 XS400SJ HERITAGE w/Bobber frame

Discussion in 'The Garage' started by Kyle Manson, Sep 21, 2021.

  1. Kyle Manson

    Kyle Manson XS400 Member

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    AEDB66B3-3883-4743-88AA-8ABF7F891201.jpeg
    This is my first bike guys and I’m really excited to start getting things working.

    I’m planning on taking my time and doing a restoration with it over the winter.
    Bought it from previous owner who let it sit with it on, and gas in the tanks. It won’t start and im pretty sure I just need to clean the tank, run some sea foam, and rebuild the carbs.

    I’d appreciate any help from all of you guys who have had more experience. This would be my first time working on a bike and I’m pretty stoked.
     
  2. Kyle Manson

    Kyle Manson XS400 Member

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    My first question I’m trying to tackle is what rebuild kit should I use. It seems like http://m.siriusconinc.com/ is the place to get it but I’m not sure which one I need, I couldn’t find any Yamaha options or maybe I’m rushing. (currently at work)

    Could anyone help me out?
     
  3. Kyle Manson

    Kyle Manson XS400 Member

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    I believe I might have found what I needed but the year is off. I'll keep searching for a little, and then check compatibility. part YAMAHA XS400 KEYSTER CARB KIT 1977
     
  4. Buddha

    Buddha XS400 Addict

  5. xschris

    xschris XS400 Guru Top Contributor

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    Most often you can just replace the rubber bits in the carbs and save a lot of money. Make sure to use real mikuni jets as the aftermarket ones are usually off on sizes and quality is poor. The 80-82 sohc xs400 uses the same bs34 carbs as the 80-84 xs650 for rebuild kits. Only air jets, slide needles and needle jets are different in size. All else is the same. Parts for those are very plentiful. You can always search OEM part numbers and find the high quality yamama stuff. https://www.babbittsonline.com/yamaha-parts Good site for part numbers.
     
    Last edited: Sep 22, 2021
  6. Kyle Manson

    Kyle Manson XS400 Member

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    Thanks I’ll be sure to make sure I get the beer stuff!
     
  7. Kyle Manson

    Kyle Manson XS400 Member

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    Bike Model is XS400SG based off VIN
     
    xschris likes this.
  8. Kyle Manson

    Kyle Manson XS400 Member

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    Alright guys, I found a really good piece of information that helped me understand carburetors in general. If you're like me, and you want to truly gain a understand of how these bikes work over time then this video is worth your time when it comes to carburetors, their functions, inner workings, etc. This is not a motorcycle specific video but it was still insanely helpful!


    How Does A Carburetor Work? | Transparent Carburetor at 28,546 fps Slow Mo - -

    How does a CV Carburetor works - Quick and simple explanation -

    I think this is a excellent follow-up video to help you understand this specific process in motorcycles, and apply what we learned above to the style motorcycle carbs are built with.
     
    Last edited: Sep 26, 2021
    xschris likes this.
  9. bigdog

    bigdog XS400 Enthusiast

    Did someone mention beer?!!
     
  10. Kyle Manson

    Kyle Manson XS400 Member

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    Uploading a lot of photos here
     

    Attached Files:

  11. Kyle Manson

    Kyle Manson XS400 Member

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    6BFAC3EA-A456-4670-B71F-25790187F923.jpeg So the carbs look good
     

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