It should enter straight and level, parallel to the ground, at or just above the level where the two parts of the face cut meet. This line of uncut wood the hinge is now all that holds the tree up. If there is any lean at all in the direction of the fall, the tree will fall of its own accord. Limbing and Bucking Felling causes a rush of adrenaline, but once the tree is on the ground, your work has just begun. Approach limbing and bucking soberly each can produce more than just a headache.
Most kickbacks occur during limbing, the process of removing branches from a felled tree.
As you travel along the trunk, often cutting amid a welter of closely spaced branches, take care not to allow the top of the saw's tip to inadvertently contact a branch near the one you are cutting. Depending on how the tree fell, at least some limbs will be under great tension, either pinned beneath the fallen tree or wedged against neighboring trees. Remove all the nontensioned branches first, then begin on the difficult ones. Never release all the tension at once. You can release tension by making several shallow cuts on the tension side, and then gently cutting through from the compression side.