Have dug alot of holes with a 4000 Ford. On the 8spd that we use the most, the PTO along side the trans, below the seat on the LH side, and the lift is on the right. Not too tough, and opposed to one of the other posters, I'd never suggest getting off the tractor for the project, not that safe, doesn't gain you much, and takes alot of time.
Mark the holes by taking a shovel of dirt out at the right spots. Set the digger down on the mark, twist the lift arm adjuster to level it out if needed. Tractor just above idle, 1000 rpm or so tops, engage PTO, let lift down slowly and work up and down to dig hole and clean out hole. Dig to right depth, and move on to next hole. Usually never set brake, or get off tractor. I don't think we've ever dug a hole at more than 1500 engine RPM, with full PTO speed at 1800. Just way to fast. Even running it slow, you have to be quick to get PTO shut down if you catch something. Often times you may find yourself needing to pull forward or back up slightly, the digger may pull or push the top of the auger out of plumb.
Have hit my share of roots and broken shear bolts. I'd say you were lucky to pull it straight back out. We have a huge pipe wrench and 10' of pipe that we use, and have resorted to digging them out with a spade when things are really tough. Gotta love that sticky clay with tree roots and rocks.
Mark the holes by taking a shovel of dirt out at the right spots. Set the digger down on the mark, twist the lift arm adjuster to level it out if needed. Tractor just above idle, 1000 rpm or so tops, engage PTO, let lift down slowly and work up and down to dig hole and clean out hole. Dig to right depth, and move on to next hole. Usually never set brake, or get off tractor. I don't think we've ever dug a hole at more than 1500 engine RPM, with full PTO speed at 1800. Just way to fast. Even running it slow, you have to be quick to get PTO shut down if you catch something. Often times you may find yourself needing to pull forward or back up slightly, the digger may pull or push the top of the auger out of plumb.
Have hit my share of roots and broken shear bolts. I'd say you were lucky to pull it straight back out. We have a huge pipe wrench and 10' of pipe that we use, and have resorted to digging them out with a spade when things are really tough. Gotta love that sticky clay with tree roots and rocks.