had a coworker, way back in the 1990's....we all worked in the shop, had JD and Kubota at the time. Customer calls, has an L4200 as I remember, was fairly new. Says "won't start was using it, ran out of fuel, refilled and bled but won't crank over". Coworker says "jump the starter but make sure it's in neutral". Customer gets off the phone. Didn't hear anything for a while, figured he probably got it fixed. Months later boss comes back and asks about so-and-such customer and who talked to him. I told him it was my coworker, boss walks over there and proceeds to go off on him like I've never seen. Apparently the customer's attorney came in and said they were going to file a suit against the company for telling the customer to jump his tractor, which he did--and ran himself over, broke his leg. I do not know the outcome, never did get involved with it (avoided it actually) so I don't know if they ever did file suit or not. But a lesson was learned.
just last year had a guy across the river from here run himself over. This time it was much more severe than a broken leg. His wife found him, or what was left of him after getting run over by a bush hog, cops and coroner picked up all the pieces and that was that. As I am told, he had the seat switch bypassed, got into some tree limbs, knocked hisself off the tractor and run him over. Tractor was still going when the first responders got there, probably 20 minutes or so after it happened.
now back to it, if you have a L3200DT, you can manually rotate the pto shaft just a little to take the bind off of it, then move the lever to "off" position. You can also reach under the hood and rotate the engine fan just a little bit and do the same thing. On L3200HST, the lever may be sticking on the transmission, and if that's the case, just reach in there with a can of WD40, or your favorite penetrating oil, spray (drench) the spring down, then move the lever--they usually free right up.