| Author | Message | ||
     Snackbar64 |
Posted this in the knowledge vault but no one responded. I have had my bike for four years now and recently it blew its first main fuse. I chalked it up as normal wear and tear and just the need to be replaced. I put another 30 amp fuse in and it blows again after being installed for two weeks and less than fifty miles of riding. What could be causing this? Should I move up to a 40 amp fuse? Any suggestions? I replaced it with a 40 amp fuse and rode two hundred miles no problem  | ||
| Wantxbr |
If the 30amp fuse is what the factory recommendation is and your still under warranty, I would put that 30amp fuse back in and take it to your Dealer. Putting a 40amp fuse in is looking for trouble. Instead of the fuse blowing it could be your entire bike. If you have a manual look it up in there for a solution. If you don't have one GET ONE. (Message edited by wantxbr on June 11, 2007) | ||
| Etennuly |
Stay with the 30 Amp +1. At four years there is a good chance your warranty is up! How about tracing the wiring and harness looking for any wear spots or chaffing around corners and the like. Some bikes have had the wires too tight near the steering head and at the stator. (Message edited by etennuly on June 11, 2007) | ||
| Snackbar64 |
Thanks guys, I will try that. I have the service manual also, but figured maybe someone else has experienced this as well. | ||
| Court |
Don't change the fuse size. Do chase the wiring down and look for, as described, chaffing. I know folks have reported things like this over the last several years . . . let's see if they chime in with the "usual suspects" of potential trouble locations. | ||
| Snackbar64 |
I've noticed that it has blown both times while I'm shifting briskly through the gears. | ||
| Gentleman_jon |
Ah, the dreaded intermittent short. Hell on earth.  As luck would have it, I was able to find, using the "Google search Bad Web " function, a thread on this very subject, which will hopefully prove useful. http://www.badweatherbikers.com/buell/messages/327 77/211173.html?1152707968 In addition, you may want to check error codes using the technique spelled out in the Shop Manual. What often happens in the Buell, which does not have a very well protected electrical wiring harness, is that the wires chafe, and cause a short circuit under certain conditions. By installing the check lamp specified above, you can root around, moving groups of wires, until the light glows brightly. Then track down the offender. Please let us know when you find out what the problem was. | ||
| Snackbar64 |
Thanks for that helpful link. I'll post the root of the problem soon. | ||
| Josh_cox |
The most common thing I have found to blow the main fuse is a shorted charging system. Check in front of the front sprocket where all of the wires route. I've seen vibration/riding eat up those more than once and blow main fuses. If not, start at the battery and trace your short. Good luck!  Josh |
