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50 carb linkage

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Russ Nighbert

04-27-2003 18:04:19




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I've been working on a 50 and now realize that I should have made some measurements for the throttle rod and speed control rod before taking them apart to sand blast, etc. Can someone give me a dimension for each to get me in the ball park for the adjustments? Also the arm on the governor has a lot of movement before the internal parts contact the weight setup, I would assume that this is normal because my relative who used to own the tractor never had it apart. I also have an oil leak between the governor case and the fan shaft, tryed new gaskets but it still leaks.

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Mike Aylward

04-29-2003 09:55:41




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 Re: 50 carb linkage in reply to Russ Nighbert, 04-27-2003 18:04:19  
Russ, not to worry. If you have installed anything new around the carburetor you need to readjust this rod anyway. Here is the short and easy version of how to do this: with the engine shut off, open the throttle lever all the way. Then remove the governor to carburetor rod and lengthen or shorten it until (Deere says) it is "one-half hole short", that is the rod is that much too short of reaching straight down into the hole. I believe on a 50 this is done with jam nuts on the governor end of the throttle rod. This being said, I always set all of mine and my customers tractors one full hole short as this makes the tractor much more throttle responsive. Once this adjustment is made it need never be changed again unless you install a new manifold, carburetor or carburetor gasket and change the position of the carburetor relative to the governor (or even if you have to remove and reinstall the governor). Once this adjustment is made you can then start the tractor and set your fast idle speed with the set screw on the throttle lever or with the linkage from this lever to the governor. This will get you going. Mike

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John Van Valkenburgh

04-29-2003 07:48:48




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 Re: 50 carb linkage in reply to Russ Nighbert, 04-27-2003 18:04:19  
Russ,

I took a couple of rough measurements on my 50s throttle linkages for you.

The link between the throttle control arm and the governor spring measures about 12 3/4". The distance between the Governor arm and the throttle shaft on the carb measures about 19". Bear in mind this rod is not straight so I am measuring directly from the governor arm to the carb.

Drop me an email if you need any other help with your 50.

Regards,
John

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AlbertoV05

04-27-2003 18:44:37




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 Re: 50 carb linkage in reply to Russ Nighbert, 04-27-2003 18:04:19  
Russ,
As for the oil leak between the fan shaft and governor housing, reomve the bolts and put some thread sealer on them. I had the same problem with my 60 and the thread sealer on the bolts cured that leak.

Al in Iowa



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