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JD50 carb

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Doug

01-10-2002 17:09:18




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I have a 50 JD that sat for 10 years or so took carb off and boiled out in carb cleaner. Run wire in all holes looks new but doesnt make any difference what setting I have the needles at. Still have to have choke half on to run right. Also checked float level with sight hose. ANY IDEAS? THANKS DOUG




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Clooney

01-10-2002 17:51:33




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 Re: JD50 carb in reply to Doug, 01-10-2002 17:09:18  
~Doug, do you have a single or dual induction carb on that 50?



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Doug

01-11-2002 14:17:53




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 Re: Re: JD50 carb in reply to Clooney, 01-10-2002 17:51:33  
Dual induction Took it off again checked all the holes going to power valves are seemed ok going to try tonight to see if made any differance. Doug



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Doug

01-11-2002 15:23:11




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 Re: Re: Re: JD50 carb in reply to Doug, 01-11-2002 14:17:53  
Just put back on an no diff. Turn all three jets anywhere dont make any differance. Blew air through all those holes an seemed to be wide open. Wondering if I have manifold problem? Thanks for any Help. Doug



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Clooney

01-11-2002 15:55:45




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 Re: Re: Re: Re: JD50 carb in reply to Doug, 01-11-2002 15:23:11  
~Doug, I think you still have dirt or rust (probably rust) in the idle orifice passage or plugged 1st, 2nd or 3rd idle orifice's. You really can't get the (DUAL DLTX) carb clean inside the internal passages by just blowing air through them, you will need to run a stiff wire through the internal passages or in extreme cases use small drill bits. ~The 2 little steel balls have to be removed from the idle passages to get a wire in there to clean them. They are a real pain to remove, I have tried many ways to get them out & have had some success by using a Dremel & small bit & grinding the passage end they are in a little larger then putting some weld on the balls with my mig welder then pulling the balls with side cutters, the second way that sometimes works is to heat those little hardened suckers with a small torch tip until red hot & when they cool (slowly) you can drill them out (sometimes). New balls can be obtained from "Roberts Carb" ~If the tractor runs better with the choke 1/2 on then you probably have carb passage blockage, especially if the idle screws have no effect.

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mike fleeger

01-12-2002 20:25:15




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 Re: Re: Re: Re: Re: JD50 carb in reply to Clooney, 01-11-2002 15:55:45  
clooney is pretty nuch right, it takes about 3-5 tries to get them clean enough to work good. i've even tried the acid method, this really is not as effective as we've all heard, you really got to make sure those 3 idle passages are open, this makes all the difference in the world. also make sure the 2 main noozzles are clean, it just takes some time and perserverance.



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allen

01-10-2002 17:31:15




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 Re: JD50 carb in reply to Doug, 01-10-2002 17:09:18  
Hi we had a 520 in our shop at work, done a tune up cleaned carb etc. still the same, ended up sent it to Roberts Carb., we just got it back last week put it back on, works excellent now. there is a couple of ports that they drill out to clean then put back together. it's worth the money.



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