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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through October 31, 2007 » 06 XB12S does not start when in 1st gear. « Previous Next »

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Rasmonis
Posted on Tuesday, July 17, 2007 - 06:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It does start every time in N or 2nd. Sometimes it starts in first. If not, I get nothing, like the starter button contacts are dirty. I disassembled the starter assembly and cleaned all contacts yet the problems persists...

Weird.
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Blake
Posted on Tuesday, July 17, 2007 - 11:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Might be your clutch safety switch is malfunctioning. Mine pooped out on me some time ago. I gotta have the old Cyclone in neutral in order for it to start.
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Rasmonis
Posted on Tuesday, August 07, 2007 - 06:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Any idea where this switch is located? I can't find it in the manual.
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Blake
Posted on Tuesday, August 07, 2007 - 11:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Near the clutch lever pivot, very similar to the brake light switch installation for the front brake lever. Follow the wires.
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Sparky
Posted on Wednesday, August 08, 2007 - 02:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What are the other symptoms? Do the following things happen when you turn the key on while on the sidestand and in neutral?
- fuel pump primes,
- engine oil light comes on,
- neutral light comes on (in neutral),
so far so good?
Alrighty then,
press the start button...
- starter cranks,
- engine fires and idles. Yes/No? If Yes, you're good to go.

If No, roll up your sleeves.
If the oil and neutral lights come on but the fuel pump doesn't prime, try jiggling the key in the ignition switch. - If it works now, that might be a symptom of the ignition key switch starting to fail.
- If it doesn't prime, the problem could be the ignition key switch or one of the micro relays in the relay center.

There's a set of key, ignition and starter relays there. Isolating which one could be defective is relatively fun and simple but it takes the proper service manual and studying the wiring schematics to prepare for this step.
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Rasmonis
Posted on Wednesday, August 08, 2007 - 08:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Everything works as it should, up until the point I hit the start button. If it is in first gear absolutely nothing happens after I press start. Once I shift to neutral, 2nd, 3rd etc. It starts just fine.

While I consider the bike not starting while in first gear a neat unexpected safety feature, I also consider my bike in need of repair as this feature was not intended when I purchased it.

Runs great actually, I thoroughly enjoy my bike.

Blake, thanks for the help, I'll try to check it out tonight when I have time.
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Sparky
Posted on Wednesday, August 08, 2007 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If it starts in 2nd, that must be with the clutch lever pulled in, right? If so, the clutch switch must be working, I'd think.

What happens if you try to start in 2nd with the clutch lever released? Does it crank and lurch forward in gear or do nothing?

One more question. Assuming the neutral light comes on in neutral and goes out in 2nd, when put in 1st gear does the neutral light go out every time? I'm thinking the problem might be related to the indexing of the neutral switch or maybe the shift mechanism is not putting the gear selector all the way into first gear.

With that reasoning, if the gear lever is pressed a little more firmly, but not forcefully, into 1st gear, does that help?
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Rasmonis
Posted on Wednesday, August 08, 2007 - 05:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sparky,

All very good questions.

If everything is working correctly, it should not start while in gear with the clutch disengaged regardless of the gear, which it doesn't. Does this mean I can rule out the switch being the cause?

While testing your ideas it did start in 1st, but I did not try starting it in 1st gear first. So now it's a sporatic/intermittent issue - something must be loose somewhere.

With the exception of it not being able to start in first gear, all other mechanical/electrical aspects of the starting process are nominal.

Whatever is at fault only occurs while in first gear. I should try starting in 1st, when it fails, I'll just shift up then back to first before starting it and see what happens.
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Blake
Posted on Thursday, August 09, 2007 - 11:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I agree with Sparky. Sounds like an issue involving your neutral indicator switch/sensor.
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