Inner West Tree Surgeon
This machine is capable of handling large trees. You will need a truck with a winch to pull this machine. You should also have a bucket to move the debris from the tree. You may also need some small tools to cut the roots around the stump of the tree.
If people don't take care of the stump, it could get filled with water and get rot. People have to remove the tree stump in order to prevent such problems.
You may want to hire a tree removal company to remove your unwanted trees. You will probably need a permit from the city to do this. Make sure to check with your local government about any special requirements you might have to get the permit.