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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Engine - all topics related to the Motor » BLAST SPECIFICS - procedures, and ideas on assisting procedures » Clutch Switch Bypass « Previous Next »

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Carcass
Posted on Saturday, April 17, 2004 - 03:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ok, just for anyone who wants to; if you reverse the polarity on diode #2 (the middle one) it will "safely" bypass the clutch switch. For example; if you thought your clutch switch was bad, or needed to be able to start the bike with one hand while spraying WD40 on your intake manifold to see if it's leaking... you just pull it out and put it in backwards.

Diode #2 is Starter Circuit Diode. Fuse Block
P.S:Your sidestand and neutral switches will still function correctly.
-Mark
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Rockbiter1
Posted on Tuesday, May 04, 2004 - 09:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Is it safe to run the bike in this mode? or is it a temp fix only?
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Joey
Posted on Thursday, May 06, 2004 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Next time I'm in a fix (ice on the clutch switch like last time or something else) I'll try that. Good thing about it not affecting the side stand. I need that one!
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Carcass
Posted on Thursday, May 13, 2004 - 03:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes, you can run the bike this way all the time, NOT that I'm recommending it... If you are really used to starting your bike with it in gear, well, then... : )

The diode is in a ground circuit, so it will not put a drain on your battery or anything.

I've been running mine this way for months.
-Mark
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Carcass
Posted on Thursday, May 13, 2004 - 03:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

P.S.- I've actually removed my clutch switch and tucked away the wiring harness to it.

-Mark
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Rockbiter1
Posted on Thursday, May 13, 2004 - 07:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well, obviously, i'd prefer a hard-wired fix for the switch, just havn't had time to cut into it yet...
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Sycho
Posted on Wednesday, October 27, 2010 - 02:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I know this is a very Old post, but I just tried this diode switch and it worked for one time only. When I tried to start it the next time it would crank but not fire. After several tries I switched the diode back to original position and if fired right up. Any ideas or suggestions, other than leave it alone. I would prefer to be able to start it up without havin to pull in the clutch lever all the time.
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Gearheaderiko
Posted on Wednesday, October 27, 2010 - 02:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Never heard of that happening. You might have a bad diode, try it again (just to be sure).
You can also just bypass the switch at the clutch lever.
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Jetlee
Posted on Friday, January 06, 2012 - 04:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Old post, I know...

If this diode were bad, the starter circuit would not function and the engine should not crank over.

Flipping this diode simply re-routes the ground-route for the starter circuit through the kickstand/neutral grounds. If your kickstand is up or the transmission is in neutral, it will provide the ground needed for the starter solenoid to click-closed, thus triggering the starter. One would also assume that if this is a good enough ground for the starter circuit, it's a good enough ground for the ignition circuit as well so there should be no electrical reason why the engine would not start.

If this diode is bad (multiple definitions of bad, typically it means it's no longer a 1-way valve but a solid connection, but can also mean no continuity at all; that latter in this example), there is no ground route for the starter solenoid so the starter should never trip.

If it's turning over but not starting, I would look at the following:
1. Is it in Neutral? (not necessary, but it's another ground for the ignition circuit)
2. Do you have fuel?
3. Red light flashing on ignition module?
4. Spark at spark plug?
5. Bypass kickstand safety
6. Tap the BAS very lightly
7. Check ignition timing

If you have to go past #7, you likely have more complicated issues.

(Message edited by Jetlee on January 06, 2012)
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Ezblast
Posted on Saturday, January 07, 2012 - 12:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

LOL
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Ormonddude
Posted on Wednesday, August 12, 2015 - 02:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This May have just helped me a lot I put a new Harness on a 03 Blast and have no Starter but after switching at least the relay clicks So I think I need a relay
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Ezblast
Posted on Thursday, August 13, 2015 - 05:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Front ground is probably not right - re do make sure clean and tight.
EZ
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