
32
Working
Notching Undercut
Make the notch (see figure below - B) 1/3 the diameter of the tree, perpendicular to the direction
of falls. Make the lower horizontal notching cut first. This will help to avoid pinching either the
saw chain or the guide bar when the second notch is being made.
1. Make the felling back cut (see below - A) at least 50mm higher than the horizontal notching
cut. Keep the felling back cut parallel to the horizontal notching cut. Make the felling back cut so
enough wood is left to act as a hinge. The hinge wood (see below - C) keeps the tree from
twisting and falling in the wrong direction. Do not cut through the hinge.
2. As the felling gets close to the hinge, the tree should begin to fall. If there is any chance that
the tree may not fall in the desired direction or it may rock back and bind the saw chain, stop
cutting before the felling back cut is complete and use wedges of wood, plastic or aluminium to
open the cut and drop the tree along the desired line of fall.
3. When the tree begins to fall, remove the product from the cut, stop the motor, put the product
down, and then use the retreat path planned. Be alert for overhead limbs falling and watch your
footing.
Felling Back Cut
Содержание HYC1600E
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