8N stuck clutch

Put something under the oil pan like a small bottle jack or small floor jack and then hook a chain hoist to the center of the steering wheel, Support the clutch housing with a floor jack that can be rolled back with the rear of the tractor. Remove the bolts from the steering box where it is bolted to the clutch housing. Remove the bolts from around the Engine to clutch housing. Take up on the chain hoist at the steering wheel to support the hood and steering column and if everything is loose roll the rear back till the pilot shaft is clear of the clutch disc and let the clutch housing down enough to get by the steering box and then roll it all the way back till you have room to remove the pressure plate.

I have many times been able to unstuck a clutch by tying the clutch pedal down and then getting it out on the road in fourth gear and jumping up and down on one or the other brake. You can start it in gear by shorting the starter solenoid small wire to ground while in the seat and ready to go in a direction that you will not be likely to run into something.
You will need to do some truck driver gear shifting to get it into high gear but it can be done by manipulating the throttle on a level road while shifting. Don’t force the shifter though. If you can’t get it back into high gear let it come to a halt and start again. You don’t’ want to add insult to injury by breaking something in the transmission.