Stop in for a cup of coffee

So,Buddy’s chinee tractor, has been here all summer. 28 hp 4wd with a loader. Been kind of handy but needed some work.
Pto speed lever was inop. We started pulling covers to try and figure it out. Spilled about 3 gallons of oil and got nowhere.
I found a parts diagram, and saw a spring on shift shaft. Decided to see if i could pry it out and re-engage tang into collar. It worked. Took 30 seconds. I should have sat down at computer and looked first.