SAFETY NOTE. TAKING DOWN TREES IS VERY DANGEROUS, BUT CAN BE DONE SAFELY WITH THE RIGHT EQUIPMENT AND PROPER PROCEDURES. PEOPLE AND PETS SHOULD NOT BE ALLOWED IN THE WORKZONE, 50FT OUTSIDE THE ESTIMATED HEIGHT OF THE TREE. WATCH VIDEOS, BE FAMILIAR WITH ALL SAFETY PROCEDURES WITH TRACTOR, CHAINSAW, AND TAKING DOWN TREES. START SMALL TO GAIN EXPERIENCE.
I take down whole trees with chainsaw and tractor. Look at tree, judge which way its leaning, make sure clear path towards where you want it to fall and where you will position the tractor to push it over. NEED to have personal protective equipment PPE (hard hat, safety goggles, heavy gloves, and safety boots. Always have a clear escape route should something go wrong.
Judge if the tree is leaning and or where most of the heavy branches are. Position tractor on high side of tree, or opposite of where you want it to fall, making sure roll over protection system is deployed (roll bar is up), place front end loader about 6 feet up barely touching the tree, set brake, leave tractor running. With all PPE on, make a bedding cut (level cut) about 6 inches, or whatever allows you to operate the chainsaw on its side. Kneeling, slowly cut trunk of tree about halfway through, keeping chainsaw level. Work chainsaw slowly, as forcing it dulls the chain. With chainsaw still under throttle, remove it from tree. Now, place chainsaw about a foot up from initial cut or where the cut will result in a 45 degree cut from the edge of the tree to the center. Note, always assess tree as cutting to ensure it isn't shifting or binding the saw... if it does, stop. I never have had a tree bind the saw using these steps, but necessary safety precaution. Now cut the angle cut slowly with the saw until you reach your center cut. Withdraw still under throttle, remove from tree, shut it down and move it to a safe zone away from the tractor and the tree. ENSURE clear escape path to outside the workzone or to the safety zone. Now with tractor in, 4wd, low range, begin pushing tree over, ensuring top is moving away from you and towards the fall zone. it may take a while but should fall where crease in cut was made. Once tree is down, you can begin cutting it up, and hauling it off.
Professional tree removers typically climb trees, with tree leg spikes, ladders or cherry picker trucks, tying off branches with rope if near structures, cut them and lower them. They do the same taking down the trunk, from the top down, also tying off with rope to lower to the ground until on the ground.
I'm a Disabled American Veteran and brought my tractor to save my back. I cleared about 30 50 to 80 ft trees from my property, dug up the trunks with my backhoe, spread and leveled 175 dumptruck loads of topsoil, maintaining natural grade of the land with box blade, let laborers use my post hole digger attachment to install 5ft tall goat wire around all 2 1/3 acres, dug water lines and drainage ditches. I have fork lift, backhoe, boxblade, post hole digger, roto tiller, finish mower, shredder.
Anyhoo, you need to do a LOT of homework, research, and self analysis if you want to take this on. I was still working when I took all this on, worked after work 5PM to 9PM workdays, and about 12 hour a day Sat and after Church on Sundays. Guy delivering my topsoil said he would do all the work for $200/hr, but I said no, that's what I bought the tractor for. It has 1,100 hours on it. With forklift attachment, I can accept deliveries at my home. I also use the tractor to maintain half mile gravel road.
Hope this helps with your decision. Feel free to ask questions on the open forum or private conversation.
Cheers, Ron