Originally this tractor would not run without the choke 1/3 to 1/2 out. It was hard to start and run inconsistently.
With help from members on this forum, particularly Bruce, The tractor will start and run without having the choke out. However it still has issues,
Still no gas flowing from the carb when it is running and I remove the drain plug on the bottom.
I static timed it per the shop manual instructions, then hooked up my timing light to it and checked it.At 450 RPM's it is at 4deg BTDC. (That is the slowest it will run.)
at 1200 rpm it was 10 degrees,
at 1800 rpm it was 15 degrees. That is as fast as it would go. I should also mention that the timing marks jump very rapidly about 1/2 degree.
With brush hog hooked up it will not mow unless I am in first gear and the throttle is all the way open.
When I had to run it with the choke open, I could mow in 3rd gear.
One thing I am going to do is pull and clean the plugs.