To help me I printed out the schematic on the plotter at 36"x44" ;)

[image: Schematics] <http://munz.kicks-ass.net/nighthawk/?p=82>

-Kyle


On Mon, Mar 16, 2009 at 8:36 AM, Creative Residential Designs <
[email protected]> wrote:

>  Hint: To trace a wire I used colored pencils. HotrodMamma
>
>
> ----- Original Message -----
> *From:* Kyle Munz <[email protected]>
> *To:* [email protected]
> *Sent:* Sunday, March 15, 2009 11:00 PM
> *Subject:* [Nighthawk Lovers] Re: Nighthawk S starting problem
>
> Here's the wiring diagram Dennis scanned for me a while back (see
> attached). You're looking at the "changing indicator" and "Changing switch".
> I'd start with the switch first myself.
>
> -Kyle
>
> On Mon, Mar 16, 2009 at 12:51 AM, Graham Rogers <[email protected]> wrote:
>
>> I wondered if anyone would notice Dennis.  It's an '86.  When I bought it,
>> the tank had been replaced with an '85.  I had the side covers and tail
>> piece painted and decided to go with 85 decals for two reasons.  The ones on
>> the tank were good and I prefer the 85 cosmetics over the '86. Now I'm ready
>> to fix the N/gear indicator light problem (always staying on N).  Where do I
>> start? Graham
>>
>>  On Mar 15, 2009, at 9:01 PM, Dennis Hammerl wrote:
>>
>>   It's an interesting bike. What year is it supposed to be ? The
>> cosmetics are '85, the wheels are '86. The motor might have been painted ?
>> but they look like '86 too. '84 and '85 have polished rims and cylinder fins
>> and head cover. '86 is all black.
>>
>> --- On *Sun, 3/15/09, Graham Rogers <[email protected]>* wrote:
>>
>> From: Graham Rogers <[email protected]>
>> Subject: [Nighthawk Lovers] Re: Nighthawk S starting problem
>> To: [email protected]
>> Date: Sunday, March 15, 2009, 5:07 AM
>>
>> I don't know. There was red lettering on the ends, they were peeling so I
>> took them off.  Could they have been FZ, F something I think?
>>  On Mar 15, 2009, at 12:58 AM, Dennis Hammerl wrote:
>>
>>   Pretty motorcycle. Very handsome. What make slip-ons ?
>>
>> --- On *Sat, 3/14/09, Graham Rogers <[email protected]>* wrote:
>>
>> From: Graham Rogers <[email protected]>
>> Subject: [Nighthawk Lovers] Re: Nighthawk S starting problem
>> To: [email protected]
>> Date: Saturday, March 14, 2009, 8:07 PM
>>
>> Here's the Nighthawk in question - I've solved the choke problem (it was
>> in the carbs dummy).  Thanks to Dennis.  Now I have a sticking front caliper
>> and the N light always on.  At least now it starts at the touch of the
>> button, kiwi
>> <#1>
>>  On Feb 25, 2009, at 5:49 PM, Kyle Munz wrote:
>>
>> I can remember fighting this same problem on my dirtbike as a kid. After
>> finding the solution I bought a sticker for the bike that read "Turn the gas
>> on dummy!". Not to say you're a dummy, but the problem does sound like a
>> lack of fuel somewhere along the line.
>>
>> -Kyle
>>
>>
>> On Wed, Feb 25, 2009 at 5:46 PM, Graham Rogers <[email protected]> wrote:
>>
>>> I cranked  the motor over - it tried to start, at least on one or two
>>> cyl. Then I checked the plugs.  They were dry on the tips and porcelain but
>>> a little wet on the rim of the plug.  It didn't smell like gas however.  I
>>> then tried to start the bike with my hand restricting the air flow at the
>>> air filter.  It did start but died when I moved my 'hand choke' I probably
>>> could have gotten it started that way.  So, it looks like the choke isn't
>>> working eh?  Now what? Graham
>>>
>>>  On Feb 25, 2009, at 12:21 AM, Dennis Hammerl wrote:
>>>
>>>   Spraying it optimizes the conditions needed for starting. Which...
>>> means the chokes aren't working. If it has a strong vacuum when cranking if
>>> you hold your hand over any carb throat, the chokes aren't passing any fuel.
>>> WHY ? The "gas chokes" are very simple valve devices. If they have access to
>>> fuel from the float chamber and they are open to the bores when activated,
>>> all should work. With the throttle plates closed, the high vacuum (or , more
>>> properly, low pressure) should draw fuel up through the choke circuits and
>>> into the motor. It's as simple as a faucet. I don't want to get into any
>>> abstract at this point. Are the plugs getting wet when you crank the motor
>>> with the chioke operated ? Knowing that is a must before proceding. If they
>>> are, we look elsewhere. If not, we stay in the carbs.
>>>
>>> --- On *Tue, 2/24/09, Graham Rogers <[email protected]>* wrote:
>>>
>>> From: Graham Rogers <[email protected]>
>>> Subject: [Nighthawk Lovers] Re: Nighthawk S starting problem
>>> To: [email protected]
>>> Date: Tuesday, February 24, 2009, 8:05 AM
>>>
>>> Tried starting the bike this morning and there doesn't seem to be any
>>> improvement.  It would 'bubble' along like it was trying to catch (it acted
>>> like a weak spark) but again it took starting fluid and the choke seemed not
>>> to play apart.  Once it had 'caught', restricting the air flow through the
>>> air filter with my hand significantly increased the rpms.  Maybe I should
>>> also check the state of the battery huh? Incidently I noticed the fuel
>>> gauge didn't work until I revved the engine significantly and held the revs.
>>> That was a new one to me,  Graham
>>>
>>>  On Feb 23, 2009, at 11:02 PM, Dennis Hammerl wrote:
>>>
>>>   Let us know how that works out. The neutral wiring is grounded and
>>> that's why it always shows N / green light. Let's get into that later. You
>>> have multiple issues. One at a time.
>>>
>>> --- On *Mon, 2/23/09, kiwi <[email protected]>* wrote:
>>>
>>> From: kiwi <[email protected]>
>>> Subject: [Nighthawk Lovers] Re: Nighthawk S starting problem
>>> To: "Nighthawk Motorcycle Lovers!" <[email protected]>
>>> Date: Monday, February 23, 2009, 1:16 PM
>>>
>>> Blasted those tiny holes that allow the gas through when using the
>>> choke with compressed air and
>>>  spent 2 hours reinstalling the carbs. It
>>> still took starting fluid to get the bike started BUT, not very much
>>>
>>> and the choke worked a little.  I'll see how it
>>>  starts
>>>  tomorrow when
>>> it is back to winter temperature.
>>>
>>> Second problem with this NH is the neutral/gear indicator.  It reads N
>>> all the time and won't show what gear the bike is in. I found a little
>>>
>>> black box under the tail section that I think is part of the
>>>  N/gear
>>>
>>> indicator system.  Is there a way to check it?
>>> Third problem should be simple.  The left front turn signal is
>>> 'bright' when ignition is on but will not blink when  it should.  The
>>>
>>> others work as they should.  That left one shines a lot brighter than
>>>
>>> the right front when ignition is on.
>>>
>>> On Feb 22, 11:11 pm, Dennis Hammerl <[email protected]> wrote:
>>>
>>> > I will assume your carb clean was a complete operation. Let's examine
>>>
>>> how the choke works. The cable opens valves that will
>>>  permit raw fuel to be
>>> sucked into the motor during cranking. Now,
>>>  lets say that works fine.Your plugs
>>> should be wet after cranking for a short while. Y-N ? The most common
>>>  cause of
>>> the plugs being dry after cranking is the throttle plates being open too 
>>> far and
>>>
>>> causing insufficient vacuum. Same as opening the throttle while trying
>>>
>>>  to start.
>>> When the intake air flow is too low, no fuel will be drawn in from the choke
>>> circuit. If the plugs are wet, you're flooding the motor.
>>>
>>> > We start here. Additional checks of compression and a leak-down may be in
>>>
>>> order.
>>> > This may take time to resolve. Get at it.
>>> >
>>> > --- On Sun, 2/22/09, Graham Rogers <[email protected]> wrote:
>>>
>>> > From: Graham Rogers <[email protected]>
>>>
>>> > Subject: [Nighthawk Lovers] Nighthawk S starting problem
>>> > To: [email protected]
>>>
>>> > Date: Sunday, February 22, 2009, 6:18 PM
>>>
>>> >
>>> > I have a 1986 Nighthawk S.  It ran before I got it but always took
>>> > starter fluid in the air filter
>>>  to get it going.  I pulled the carbs
>>> > and
>>>
>>>  thoroughly cleaned them and used to compressed air in all the
>>>
>>> > holes.  However the bike still will not start without stater fluid
>>> > and even then it takes along time with the fluid.  I noticed that
>>>
>>> > using the choke seemed to make no difference at all so, thinking that
>>>
>>> > perhaps the choke isn't working at all I removed the carbs again
>>> > (they are terrible to remove) and did what I could toi ensure the
>>>
>>> > choke was working right.  The mechanism moves as it should and I used
>>>
>>> > compressed
>>>  air in the holes to the where I
>>>  presume the choke opens.
>>> > Now, before I reinstall the carbs, any suggestions?  Could the
>>> > problem have been the choke or is there something else that would
>>> > cause the same problem.  By the way, once the
>>>
>>>  bike was warmed up, it
>>>
>>> > ran fine - just when it's cold I have to use
>>>  starting fluid,  Graham
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
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>>
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>>
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>>
>>
>
>  ------------------------------
>
>
> >
>

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