Notching Undercut; Felling Back Cut - LawnMaster CS1216 Manuel D'utilisation

OPERATION
An escape path should be planned and cleared as necessary before cuts are started.
The escape path should extend back and diagonally to the rear of the expected line of fall (Fig. 26).
Before felling is started, consider the natural lean of the tree, the location of larger branches and the
wind direction to judge which way the tree will fall.

NOTCHING UNDERCUT

Make the notch (B) 1/3 the diameter of the tree, perpendicular to the direction of falls (Fig. 13).
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.

FELLING BACK CUT

Make the felling back cut (A) at least 50 mm higher than the horizontal notching cut (Fig. 13). 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 keeps the tree from twisting and falling in the wrong direction.
Do not cut through the hinge.
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 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.
When the tree begins to fall remove the product from the cut, stop the motor, put the product down,
then use the retreat path planned. Be alert for overhead limbs falling and watch your footing.
Limbing is removing the branches from a fallen
tree. When limbing leave larger lower limbs to
support the log off the ground. Remove the small
limbs in one cut .
Branches under tension should be cut from the
bottom up to avoid binding the product.
23
Fig.13