Oil level is about half full or more. I had the plastic neutral switch off weeks ago and got that to work as when I got the tractor there was no ground to the solenoid. So that fixed the no start.
For reference the tractor serial number is 9645209.
I was using the tractor tonight and it had the same jump when the lever was moved past the same point. Its almost like theres a dead spot in the valve. The linkage has a ball and socket at the bottom of the selector shaft and at the spool valve the rod is bent 90* and cotter pinned on both sides. I then moved the travel lever to full forward and clamped the spool valve to the valve body and tried to move the control lever. No play in the linkage that I can see or feel.
How full must the hydraulic reservoir be? I just dont want a mess if it decides to burp over.