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NAA carb question


 
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William Fissell
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Joined: 02 Apr 2010
Posts: 1258


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PostPosted: Mon Nov 13, 2017 2:43 pm    Post subject: NAA carb question Reply to specific post Reply with quote

Hi, All,

I have a 53 Jubilee/NAA that I have had about 8 years. I have cleaned and rebuitl the carb a few years ago. Recently it sat for a whiel so I disassembled the carb, chased all the apertures with fishing line, spryaed it w carb cleaner, check float, etc.

Oddly, when setting the main jet, I cannot ever seem to make it too rich. Start 1 1/2 tursn out, tracctor strats; about 3/4 turn in and it stumbles. I can back it out out out until its loose and the tractor is still not too rich.

Any idea? It seems to run ok.

thanks

Bill
 
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Royse
Tractor Guru


Joined: 17 Jan 2011
Posts: 18222
Location: Ionia County Michigan

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PostPosted: Mon Nov 13, 2017 3:36 pm    Post subject: Re: NAA carb question Reply to specific post Reply with quote

Most likely cause IMHO is that there is still a passage part way
plugged. Are you adjusting it at idle or at a higher speed?
The idle air adjustment may make a difference at idle.

On the other hand, if it runs fine, idles nice, has plenty of power
and doesn't get hot, you may just want to let sleeping dogs lie.
 
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