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Mal(Pa)
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Joined: 16 Feb 2010
Posts: 153
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 Posted: Sun Dec 23, 2012 5:23 pm Post subject: Zenith carb |
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Hi fellas, I have put a new Zenith b6nn8510a carb on my Ford 860 as it"s the one that model calls for. All of the searching I have done on the internet tells me how to adjust the idle speed(I know that one) but then it tells me how to adjust the "idle adjusting needle" and the "power adjusting needle". The problem is that it only has one adjusting needle besides the idle speed screw and it is near the top.I'm lost at this point so does anyone have the answer? Thanks,, Mal
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old
Tractor Guru
Joined: 12 Mar 2000
Posts: 50476
Location: Lake of the Ozarks area of MO
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| Posted: Mon Dec 24, 2012 9:57 am Post subject: Re: Zenith carb |
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A picture would help. If you remove both screws do they both have a tapper end on them??? If yes then one it the idle and the other a main jet adjustment. If one is long and sort of points down at an angle of say 45 or so good chance that is the main jet adjustment
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JMOR
Tractor Guru
Joined: 13 Aug 2007
Posts: 12682
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| Posted: Mon Dec 24, 2012 10:03 am Post subject: Re: Zenith carb |
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| Mal(Pa) wrote: | | (quoted from post at 21:23:06 12/23/12) Hi fellas, I have put a new Zenith b6nn8510a carb on my Ford 860 as it"s the one that model calls for. All of the searching I have done on the internet tells me how to adjust the idle speed(I know that one) but then it tells me how to adjust the "idle adjusting needle" and the "power adjusting needle". The problem is that it only has one adjusting needle besides the idle speed screw and it is near the top.I'm lost at this point so does anyone have the answer? Thanks,, Mal |
Does your Zenith look like this Zenith??
 red marks Main Power mix adjust
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Mal(Pa)
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Joined: 16 Feb 2010
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| Posted: Mon Dec 24, 2012 10:17 am Post subject: Re: Zenith carb |
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It does not have that bottom adjustment,just one at an angle near the top. I'll try to post a picture
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JMOR
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Joined: 13 Aug 2007
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| Posted: Mon Dec 24, 2012 10:24 am Post subject: Re: Zenith carb |
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| Mal(Pa) wrote: | | (quoted from post at 14:17:34 12/24/12) It does not have that bottom adjustment,just one at an angle near the top. I'll try to post a picture |
Some Zeniths had only idle adjust with a fixed main power jet (not adjustable).
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Mal(Pa)
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| Posted: Mon Dec 24, 2012 10:31 am Post subject: Re: Zenith carb |
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http://www.tractorshed.com/gallery/pieces/c51183.jpg
Here's the pic, I hope
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JMOR
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Joined: 13 Aug 2007
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| Posted: Mon Dec 24, 2012 10:35 am Post subject: Re: Zenith carb |
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| Mal(Pa) wrote: | (quoted from post at 14:31:24 12/24/12)
http://www.tractorshed.com/gallery/pieces/c51183.jpg
Here's the pic, I hope |
Yes, non-adjustable/fixed jet unit. Plug is where adjuster would have been.
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Mal(Pa)
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Posts: 153
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| Posted: Mon Dec 24, 2012 10:41 am Post subject: Re: Zenith carb |
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Thanks Jmor,so I only have idle mixture adjust. I hope that works out. I did adjust that to the best of my ability. Thank You, Mal
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Kurt-NEPA
Long Time User
Joined: 05 Mar 2009
Posts: 737
Location: Tunkhannock, PA
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| Posted: Mon Dec 24, 2012 1:34 pm Post subject: Re: Zenith carb |
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Your Picture Mal.
Last edited by Kurt-NEPA on Mon Dec 24, 2012 1:35 pm; edited 1 time in total |
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Mal(Pa)
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| Posted: Mon Dec 24, 2012 1:55 pm Post subject: Re: Zenith carb |
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Thanks Kurt
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