I had a forum member rebuild my intake/exhaust manifold for me last year, and the tractor sat down for a while as it was being done
When I restarted the tractor, it would not run worth a hoot.
I checked everything that I could think of, but no luck.
We finally pulled the spark plug wires one at a time and found that it was only running on 2 cylinders.
I had put new wires on it, and as a ex auto mechanic, I know how to put wires on.
ANyway, I put the wires back on and I will be darned if the crazy thing didnt start running right
I was aggravated and relieved at the same time LOL
Anyways, she runs like a champ now and I cant be happier