Farmall M Governor Problem

Has anyone ever had a problem with the governor not wanting to return to idle intermittently ? I am trying to get my old tractor ready to pull in some antique pulls with a 20% over stock RPM limit. This tractor has been sitting for 8 years without being ran, I rebuilt the engine got it running good and went to work on the governor. When I bought the tractor 15 years ago the gov spring was wired really short and the tractor would turn a butt load of RPMsm back then there wasn't a limit in the pulls that I pulled in so I was happy that it turned so many RPMs but now I need to turn only 1920 and I can get that in the first 1/4" of throttle. So I pulled the spring out got rid of the wire that was holding it together, and put it back together, now when I rev it only goes to 1900, so that is close enough but sometimes it would not return to idle, I have been messing with it all day and it seems like the weights or something are sticking. I got the idle set at roughly 400 RPMs. Sometimes I can rev it up but when I pull back on the throttle it only goes down to 1000 RPMs. I have the cover off of the governor and I can see that the spring is putting no tension on the on the arm when I pull all the way back on the throttle, and it still will not return idle without me pushing back on the arm on the govern side of the spring (not the side attached to the throttle linkage). If I adjust the linkage until the spring pushes back on the arm when at idle then it will idle but then I can only get about 1500 rpms and it doesn't seem like the spring would need to push it back to idle but only not pull against it and the weights woulld return it to idle.I can completely unhook the spring and it will still not go to idle sometimes, it seems that without the spring to pull again the weights that the tractor would idle all the idle all the time but mine wants to run 1000 rpms most of the time.[/list]

I had something like that happen to me. I found two problems. Everybody told me I had intake problem and it was sucking in air I guess that could have been it but not. One thing I found the carb butter fly was not closing. The other thing I found was the timming was not at TDC. I adjusted the the idle screw and everything was fine. Maybe this will help.

Sticky or binding linkage between gov and carb. Gov to carb linkage not synchronized correctly. worn out rotating assembly in gov.

(quoted from post at 18:25:49 05/31/09) Sticky or binding linkage between gov and carb. Gov to carb linkage not synchronized correctly. worn out rotating assembly in gov.

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The only thing that gets me, if it was just sticking or binding linkage then when I took my finger and pushed it back to idle it should stay there, but it goes back to 1000 RPMs as soon as I let pressure off of the arm inside of the governor, even though the spring has no tension on it.

You probably wont run that fast during a pull anyways. Set it back to around 1750, and let the governor do its job when the lugging rpms are in use on the track. If the pins are in good condition, and the slack is all out of the moving parts, you shouldnt need to go much over 1800 rpm to do what you want the tractor to do. A different spring can help, but a short spring will not let the linakge travel fully back to idle unless an adjustment to the vertical linkage is redone. ChadS