RE: [Nighthawk Lovers] Cb700sc troubleshooting

[Mark Vinopal]

@kyle I believe so, I haven't tried in a few weeks. I'll dig for the wiring 
diagram and check it out. Hopefully it is included in the pdf of the owners 
manual that I found online!
@richard I'm around Seattle Washington
I'll see how much time I can spare this weekend to try everything out! Thanks 
for the advice all.

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RE: [Nighthawk Lovers] Cb700sc troubleshooting

[Richard Potter]

Mark where do you live?

From: nighthawk_lovers@googlegroups.com 
[mailto:nighthawk_lovers@googlegroups.com] On Behalf Of Richard Potter
Sent: Wednesday, April 05, 2017 8:57 AM
To: 'nighthawk_lovers@googlegroups.com'
Subject: RE: [Nighthawk Lovers] Cb700sc troubleshooting

Next time it happens try jumping your starter relay
It is behind the right side cover

From: 
nighthawk_lovers@googlegroups.com<mailto:nighthawk_lovers@googlegroups.com> 
[mailto:nighthawk_lovers@googlegroups.com] On Behalf Of Kyle Munz
Sent: Wednesday, April 05, 2017 8:52 AM
To: nighthawk_lovers@googlegroups.com<mailto:nighthawk_lovers@googlegroups.com>
Subject: Re: [Nighthawk Lovers] Cb700sc troubleshooting

When you press the starter button in this condition does the headlight at least 
turn off?
I wouldn't go hacking apart your wiring harness, just get the wiring diagram, 
start at the battery, and test all of the connections in the starter circuit 
until you find the gremlin. You can do this at the ends without cutting off the 
tape.


-Kyle

On Wed, Apr 5, 2017 at 10:48 AM, Mark Vinopal 
<mark.vino...@gmail.com<mailto:mark.vino...@gmail.com>> wrote:
@Krunch yes, neutral light and the indicator show that I am indeed in neutral. 
I'll do my best to trace the wires, but it may require cutting through some 
insulation. I think the previous owner got carried away with taping the 
harness.. Hopefully I can figure out something quickly without getting too deep.
@Tommy yea nothing happens whatsoever. The starter doesn't turn, there is no 
sound coming from anything. The headlight and all the other lights work fine.. 
It seems to happen more often cold, but I haven't really tried out that theory 
as again, I haven't really used it all that often since I'm afraid of getting 
stuck at the gym or work. When it does happen, I really am just stuck there 
twiddling my thumbs trying it every few minutes, shifting up and down and 
pushing the bike around until it works. I was able to bump start it in this 
condition, I don't know if that helps or hurts.

Thanks again! I've got some good ideas to try this weekend.
-Mark

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RE: [Nighthawk Lovers] Cb700sc troubleshooting

[Richard Potter]

Next time it happens try jumping your starter relay
It is behind the right side cover

From: nighthawk_lovers@googlegroups.com 
[mailto:nighthawk_lovers@googlegroups.com] On Behalf Of Kyle Munz
Sent: Wednesday, April 05, 2017 8:52 AM
To: nighthawk_lovers@googlegroups.com
Subject: Re: [Nighthawk Lovers] Cb700sc troubleshooting

When you press the starter button in this condition does the headlight at least 
turn off?
I wouldn't go hacking apart your wiring harness, just get the wiring diagram, 
start at the battery, and test all of the connections in the starter circuit 
until you find the gremlin. You can do this at the ends without cutting off the 
tape.


-Kyle

On Wed, Apr 5, 2017 at 10:48 AM, Mark Vinopal 
<mark.vino...@gmail.com<mailto:mark.vino...@gmail.com>> wrote:
@Krunch yes, neutral light and the indicator show that I am indeed in neutral. 
I'll do my best to trace the wires, but it may require cutting through some 
insulation. I think the previous owner got carried away with taping the 
harness.. Hopefully I can figure out something quickly without getting too deep.
@Tommy yea nothing happens whatsoever. The starter doesn't turn, there is no 
sound coming from anything. The headlight and all the other lights work fine.. 
It seems to happen more often cold, but I haven't really tried out that theory 
as again, I haven't really used it all that often since I'm afraid of getting 
stuck at the gym or work. When it does happen, I really am just stuck there 
twiddling my thumbs trying it every few minutes, shifting up and down and 
pushing the bike around until it works. I was able to bump start it in this 
condition, I don't know if that helps or hurts.

Thanks again! I've got some good ideas to try this weekend.
-Mark

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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Kyle Munz]

When you press the starter button in this condition does the headlight at
least turn off?
I wouldn't go hacking apart your wiring harness, just get the wiring
diagram, start at the battery, and test all of the connections in the
starter circuit until you find the gremlin. You can do this at the ends
without cutting off the tape.


-Kyle

On Wed, Apr 5, 2017 at 10:48 AM, Mark Vinopal 
wrote:

> @Krunch yes, neutral light and the indicator show that I am indeed in
> neutral. I'll do my best to trace the wires, but it may require cutting
> through some insulation. I think the previous owner got carried away with
> taping the harness.. Hopefully I can figure out something quickly without
> getting too deep.
> @Tommy yea nothing happens whatsoever. The starter doesn't turn, there is
> no sound coming from anything. The headlight and all the other lights work
> fine.. It seems to happen more often cold, but I haven't really tried out
> that theory as again, I haven't really used it all that often since I'm
> afraid of getting stuck at the gym or work. When it does happen, I really
> am just stuck there twiddling my thumbs trying it every few minutes,
> shifting up and down and pushing the bike around until it works. I was able
> to bump start it in this condition, I don't know if that helps or hurts.
>
> Thanks again! I've got some good ideas to try this weekend.
> -Mark
>
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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Mark Vinopal]

@Krunch yes, neutral light and the indicator show that I am indeed in neutral. 
I'll do my best to trace the wires, but it may require cutting through some 
insulation. I think the previous owner got carried away with taping the 
harness.. Hopefully I can figure out something quickly without getting too deep.
@Tommy yea nothing happens whatsoever. The starter doesn't turn, there is no 
sound coming from anything. The headlight and all the other lights work fine.. 
It seems to happen more often cold, but I haven't really tried out that theory 
as again, I haven't really used it all that often since I'm afraid of getting 
stuck at the gym or work. When it does happen, I really am just stuck there 
twiddling my thumbs trying it every few minutes, shifting up and down and 
pushing the bike around until it works. I was able to bump start it in this 
condition, I don't know if that helps or hurts.

Thanks again! I've got some good ideas to try this weekend.
-Mark

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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Tommy Hill]

Now I need more info.  What exactly happens when it won't start?  Is the 
starter turning the engine and it won't catch?  Can you say it does this only 
when the engine is warm or hot?  Or truly nothing happens?

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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Dwayne Wells]

When you're in Neutral, and it won't start, is your Neutral light on, and your 
gear selector indicator (if applicable) also showing Neutral?

If yes, I think those circuits are fine. Check / trace wires from the kill 
switch and the start button next. Understand how bit work, ohm them out, then 
bypass one at a time with some wire. If you can get it to turn over by 
bypassing, investigate all connections and inspect the actual wire that you 
have bypassed. After that, I think you're into the ignition switch.

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> On Apr 4, 2017, at 8:28 PM, Mark Vinopal  wrote:
> 
> Thank you all for the quick responses! The lights and turn indicators work 
> fine, but I have actually always needed the bike to be in neutral to start, 
> just having the clutch in doesn't work. 
> Well.. I have bump started in 2nd a few times but I don't think that would be 
> applicable here.
> 
> What is stumping me is that it works most of the time.. I just never want to 
> take it far from home because I was stuck for a good 45 minutes one day while 
> it was trying to decide if it wanted to start or not.
> Does this help!
> 
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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Mark Vinopal]

Thank you all for the quick responses! The lights and turn indicators work 
fine, but I have actually always needed the bike to be in neutral to start, 
just having the clutch in doesn't work. 
Well.. I have bump started in 2nd a few times but I don't think that would be 
applicable here.

What is stumping me is that it works most of the time.. I just never want to 
take it far from home because I was stuck for a good 45 minutes one day while 
it was trying to decide if it wanted to start or not.
Does this help!

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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Dwayne Wells]

I have an 83 650sc but will offer a nickels worth of advise as cents are no 
longer available in Canada.

If the battery is good and the lights come on, I'd be checking wiring from your 
start button, then the kill switch, then your ignition.

If the lights don't come on, on my 650 there is a main fuse near the solenoid. 
Check that. In 83, this was essentially a tiny bus bar. It looked fine but when 
I looked closer, it was indeed broken. Ohm it out if you have a meter.

A defective neutral switch should be ash to diagnose as the bike should start 
with the clutch pulled in, unless, there's also something wrong with that 
detection system as well.


Good luck!
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> On Apr 4, 2017, at 12:20 PM, Mark Vinopal  wrote:
> 
> Hi all, I am looking for some troubleshooting advice on a beautiful (factory 
> red/black) '84 cb700sc that I purchased last September.
> I used it all last year as a commuter bike (I know.. I would probably have 
> been better off getting something smaller and newer but I couldn't resist) 
> and have been doing all of the maintenance myself. I recently have been 
> having trouble with starting the bike and am trying to get it up to snuff in 
> preparation for good riding weather here in the northwest.
> 
> As far as symptoms go, There is occasionally just no reaction whatsoever when 
> I hit The ignition. The battery is fine, the kill switch is in the right 
> position, and the starter also works before and after these isolated 
> occurances. The starter itself is fine, I pulled it off and looked at the 
> solenoid and the wires and everything checks out. I am wondering if there is 
> a wiring problem somewhere else in the harness, or if maybe the neutral 
> indicator is damaged?
> 
> If all else fails I will need to take it to a shop, but money is tight and I 
> would love to be able to do this myself! Please let me know if you have any 
> ideas!
> Regards,
> -Mark
> 
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Re: [Nighthawk Lovers] Cb700sc troubleshooting

[Kyle Munz]

Do you get lights and everything else and just no start or nothing at all?


-Kyle

On Tue, Apr 4, 2017 at 12:15 PM, Mark Vinopal 
wrote:

> Hi all, I am looking for some troubleshooting advice on a beautiful
> (factory red/black) '84 cb700sc that I purchased last September.
> I used it all last year as a commuter bike (I know.. I would probably have
> been better off getting something smaller and newer but I couldn't resist)
> and have been doing all of the maintenance myself. I recently have been
> having trouble with starting the bike and am trying to get it up to snuff
> in preparation for good riding weather here in the northwest.
>
> As far as symptoms go, There is occasionally just no reaction whatsoever
> when I hit The ignition. The battery is fine, the kill switch is in the
> right position, and the starter also works before and after these isolated
> occurances. The starter itself is fine, I pulled it off and looked at the
> solenoid and the wires and everything checks out. I am wondering if there
> is a wiring problem somewhere else in the harness, or if maybe the neutral
> indicator is damaged?
>
> If all else fails I will need to take it to a shop, but money is tight and
> I would love to be able to do this myself! Please let me know if you have
> any ideas!
> Regards,
> -Mark
>
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[Nighthawk Lovers] Cb700sc troubleshooting

[Mark Vinopal]

Hi all, I am looking for some troubleshooting advice on a beautiful (factory 
red/black) '84 cb700sc that I purchased last September.
I used it all last year as a commuter bike (I know.. I would probably have been 
better off getting something smaller and newer but I couldn't resist) and have 
been doing all of the maintenance myself. I recently have been having trouble 
with starting the bike and am trying to get it up to snuff in preparation for 
good riding weather here in the northwest.

As far as symptoms go, There is occasionally just no reaction whatsoever when I 
hit The ignition. The battery is fine, the kill switch is in the right 
position, and the starter also works before and after these isolated 
occurances. The starter itself is fine, I pulled it off and looked at the 
solenoid and the wires and everything checks out. I am wondering if there is a 
wiring problem somewhere else in the harness, or if maybe the neutral indicator 
is damaged?

If all else fails I will need to take it to a shop, but money is tight and I 
would love to be able to do this myself! Please let me know if you have any 
ideas!
Regards,
-Mark

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