Results 1 to 10 of 10

Thread: 2004 Buell XB12R Firebolt, just acquired, now runs for first time in 5 years!

  1. #1
    Junior Member
    Join Date
    Aug 2019
    Posts
    7

    2004 Buell XB12R Firebolt, just acquired, now runs for first time in 5 years!

    Hi guys, I threw a brand-new battery in my 2004 XB12R and it ran instantly!

    Here's a video that I just posted: https://www.youtube.com/watch?v=c-pjP9i98Dw

    I was quite amazed.

    The previous owner says it had a charging problem, and most likely needs the stator replaced. I'm going to run it for a while and see what happens.

    The neutral light is on at all times even when in gear. Thoughts?

    Jeff

  2. #2
    Junior Member
    Join Date
    Aug 2019
    Posts
    7
    Also, I just discovered that the headlight doesn't turn on.

    As for the charging system, I put a voltage meter on the battery terminals. The battery is definitely charging; it goes up to about 14.3 and when it's revved up, it definitely seems to charge more.

  3. #3
    Senior Member Cooter's Avatar
    Join Date
    Dec 2012
    Location
    Crawling up your skirt
    Posts
    6,682
    Glad you got her running!

    For the neutral light: In your fuse box there is a diode in one of the spots. Take it out and turn it around

    Sounds like its charging, but could be intermittent. 98% of the time its the Voltage regulator, not the stator but test it using the manual to make sure before you buy anything. You can get a free .pdf download from Buellmods.com or Buelltooth.com

  4. #4
    Member TapRoot's Avatar
    Join Date
    Sep 2018
    Location
    Massachusetts
    Posts
    58
    ...and another one awakens from the dead. Make sure the first thing you do is get a 1275 kit. From there you will need to purchase a hard tail Buell chopper kit, remove the fuel injection and add a carb. Now you will have yourself a ridiculously looking oversized big wheel. I’ll be happy to take those black plastics off your hand when you part it out. She’s a pretty one!

  5. #5
    Junior Member
    Join Date
    Aug 2019
    Posts
    7
    Follow-up: After realizing that the reason the headlights were off was that the fuse was missing (duh), they now work. Battery voltage across the terminals while running, with headlights on, tops out at about 13.93.

  6. #6
    Junior Member
    Join Date
    Aug 2019
    Posts
    7
    Lol!

  7. #7
    Junior Member
    Join Date
    Aug 2019
    Posts
    7
    Thanks! I reversed the diode, but it didn't fix the issue. I suppose the diode could be bad. Is this a common auto-parts store item?

  8. #8
    Had the neutral light stay on on my wife's 06 xb9, was a bad neutral switch.

  9. #9
    Junior Member
    Join Date
    Aug 2019
    Posts
    7
    Thanks for that clue, I guess my next step will be to look up the neutral switch test in the manual

  10. #10
    Senior Member lunaticfringe's Avatar
    Join Date
    Feb 2011
    Location
    AmishLand, PA.
    Posts
    7,488
    Quote Originally Posted by jtnelson View Post
    Thanks for that clue, I guess my next step will be to look up the neutral switch test in the manual
    remove plastic front pulley cover---2 torx.
    neutral switch behind pulley towards front
    remove wire from switch....key ON....kill switch OFF....ground wire. neutral light on? faulty switch. neutral light still off? faulty bulb.

    it's the switch.
    part # 3900-99 Switch which includes shim/washer # 6288. standard all years sportster part as well so available at any dealership.

    looks like this.....and you'll need this..........as well. Ray made this example years ago. works perfectly with belt removed. a needle-nose does NOT.

    5820_20100904150303_L.jpg



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •