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Tractor Talk Discussion Board

Re: JD 140- stumbles at full rpms


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Posted by Don-Wi on August 28, 2016 at 23:09:02 from (66.87.77.210):

In Reply to: JD 140- stumbles at full rpms posted by Don-Wi on August 27, 2016 at 22:29:03:

The carb certainly isn't new, but it was a replacement the previous owner installed because the original one was in really bad shape. The throttle shaft had lots of wobble, and it wouldn't start when he bought it so he found a used one.

I had spray carb cleaner coming out all out the internal passages I could find, and I also soaked it in the chem dip carb cleaner for around an hour. Didn't want to over do it as this stuff will eat aluminum if left too long. Carb came out really nice and shiny, as a bonus.

This winter I'm tempted to pull the carb apart again and see about getting the throttle shaft out to measure the bore it goes through. The screws are peened on the back side, and both the original carb and the replacement are like this so I'm guessing it's supposed to be like that. I had enough issues with the choke shaft, as those little brass screws twisted right off, and I had to drill them out and chase the holes with a small tap. Didn't feel like fighting the throttle shaft at that time so I left it alone.

I did spray some ether on/around the carb when it was running rough, but it didn't seem to change anything.

Today's project was getting a door back on the mud room. Was going to replace it maybe 2 months ago, but then other stuff took priority. Hopefully I can get back at it this week some time.

Donovan from Wisconsin


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