What is the brass pin behind the choke for

  • Dirtydekay
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What is the brass pin behind the choke for

27 Jul 2015 22:23 - 28 Jul 2015 10:05
#683082
I'm trying to find out what the brass pin behind the choke is on my 81 kawasaki 440 ltd carburetor. It is shooting gas out of it. Also if this is something that can be fixed or what I can do. This is my first bike so I'm new to most of this.
81 Kawasaki 440 ltd
Last edit: 28 Jul 2015 10:05 by Dirtydekay.

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  • davido
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Re: What is the brass pin behind the choke for

28 Jul 2015 01:17
#683087
Can you post a photo of the offender?
www.kzrider.com/forum/11-projects/594313-csr1000-project-build
CB550 (1978)
CB500/4 (1972)*
KZ1000CSR (1981)
XT 600E (1999)
TDM900 (2003)

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  • Dirtydekay
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Re: What is the brass pin behind the choke for

28 Jul 2015 10:07
#683127
I can't figure out how to put a picture on here
81 Kawasaki 440 ltd

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  • martin_csr
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Re: What is the brass pin behind the choke for

28 Jul 2015 10:21 - 28 Jul 2015 10:26
#683129
Is that a solid brass pin or is it a hollow brass port/nipple?
1981 KZ650 Competition Sports and Road
Last edit: 28 Jul 2015 10:26 by martin_csr.

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  • 650ed
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Re: What is the brass pin behind the choke for

28 Jul 2015 10:36 - 28 Jul 2015 10:37
#683133
Dirtydekay wrote: I'm trying to find out what the brass pin behind the choke is on my 81 kawasaki 440 ltd carburetor.

Interesting question! I do not see that port on the Kawasaki diagram of the 1981 KZ440A2 (LTD) carbs (see 2nd image below). Do you know if those are the original carbs for that bike? Ed

Attachment 00003b-16.jpg not found



Attachment 00003a-68.jpg not found

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Last edit: 28 Jul 2015 10:37 by 650ed.

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  • martin_csr
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Re: What is the brass pin behind the choke for

28 Jul 2015 10:54 - 29 Jul 2015 05:36
#683136
From eebbaayy photos it's stock & it does not appear to be hollow,
so my guess is that it's a solid pin that acts as a plug & I guess it's leaking at the base. ???
But his description kinda belies that guess.
1981 KZ650 Competition Sports and Road
Last edit: 29 Jul 2015 05:36 by martin_csr.

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  • Dirtydekay
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Re: What is the brass pin behind the choke for

28 Jul 2015 11:43
#683146
It's not leaking at the base it has a sold stream out the back side near the top
81 Kawasaki 440 ltd

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Re: What is the brass pin behind the choke for

28 Jul 2015 11:52
#683148
I'm not for sure but I think it's hollo . The gas is squirting out of it
81 Kawasaki 440 ltd

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  • DGA
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Re: What is the brass pin behind the choke for

28 Jul 2015 14:25 - 28 Jul 2015 14:26
#683164
Likely it's a drill plug that has loosened. Apply some red loctite to it, 262, and punch it back in with a small hammer and punch until it's flush.
"83 KZ1100 Spectre, '81 Yamaha XV750 Cafe, '74 Kawasaki H2B 750
Last edit: 28 Jul 2015 14:26 by DGA.

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Re: What is the brass pin behind the choke for

28 Jul 2015 14:55 - 28 Jul 2015 23:29
#683166
I would not try to hammer it flush. eebbaayy photos clearly show the thing projecting from an orifice.

Does the other carb also have the pin? I would remove the carbs from the bike & spray compressed air or carb cleaner thru the various orifices to figure out what's what. The shapes of the passages cast into the carb body can give clues.

KZ440 carburetor body --- 4th photo --- pin appears solid .
1981 KZ650 Competition Sports and Road
Last edit: 28 Jul 2015 23:29 by martin_csr.

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  • Dirtydekay
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Re: What is the brass pin behind the choke for

28 Jul 2015 16:07 - 28 Jul 2015 16:08
#683177
The other carb has the same thing.
81 Kawasaki 440 ltd
Last edit: 28 Jul 2015 16:08 by Dirtydekay.

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  • floivanus
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Re: What is the brass pin behind the choke for

28 Jul 2015 16:33
#683183
It's the atmospheric vent. Gas comes in the carburetor, to prevent trapped air it must bleed out somewhere.

Fas shouldnt be coming out of it, time to go thru your carbs
my bikes; 80kz1000(project), 77 gl1000, 74 h2 (project)
Past; 78 kz1000, 83 kz550
Andrew

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