OK spent some time trying to diagnose the problem. Went through the governor adjustment process according to the manual and other posts I read on this site several times. No change. Engine raced governor didn't operate. Pulled the timing cover and replaced the governor. Old governor looked ok but one thing I noticed is that the tab on the cover was in the 2:00 position when i pulled the cover.
I installed the new governor. Was careful to make sure tab on the cover of the new governor was in the 8:00 position, put everything back together and adjusted the linkage again. Started the tractor and had the same symptom. I verified the linkage was not binding anywhere.
I started the tractor and removed the throttle yoke from the governor arm. Revved the engine and the governor arm did not move one bit. I tried again with my fingers on it and felt no resistance. Its like i didn't even put it back in. Took it for a short ride to see if it would be different under a bit of a load..Engine raced, governor didn't operate.
I did notice wear on the internal arm and some slop in the arm (see attached pic). Do you guys think the wear and the slop could be my problem? Would turning the dampening needle in a few turns help? I tried it 1 turn in from it hitting the spring reset everything and that didn't help. I'm not sure if turning it in more would posibley damage anything [img]https://forums.yesterdaystractors.com/photos/mvphoto68209.jpg[/img]