Question about 2004 Buell Firebolt XB12R

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I put a new voltage regulator on my 2004 Buell xb12r and the battery keeps going dead. This the second time I have replaced it in a year. The battery is only 6 mos. old. Someone told me that it might be the "stater"?

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Yes, it could be the stator (this lives under one of the engine covers). However, put a meter accross the battery and see if there is any sign of charging. You are looking for 13.5 volts dc plus. If this just shows normal battery voltage or less, check all wires on the regulator are clean and tight. If still no joy, locate your regulator. There will be 5 or 6 wires. You need to find the 3 that come from the stator. Often they are color coded yellow (all three, it is a three phase output). Disconnect these and use your meter to check accross a pair at a time (engine running). You should be getting at least 50 volts AC (note, meter must be set to AC). If you are getting a very low reading your stator is at fault.
As its not an old bike, I would double check all the wiring and make sure its all clean and connections tight.
Good luck

Posted on Sep 10, 2010

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Hi, Anonymous the following applies to carbureted also fuel injected models and the usual suspects are:
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HI ITS XB12RBUELL AGAIN. THANKS FOR THE HELP. I MY CASE MY BUELL IS NOT CHARGING DURING IDLE. CAN THIS BE FIXED BY REPLACING THE VOLTAGE REGULATOR? AND IS IT SIMPLE?


Thats a start ...you may need to change out the stator also your vom will show raw a/c w/ it unplugged check w/ vom ...good luck ,,, Id like to invite you to join our forum harleytalking.com ';';';'

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