Husqvarna 575XP AutoTune EPA I Manuel D'utilisation page 27

Felling
WARNING! Unless you have special
!
training we advise you not to fell trees with
a diameter larger than the bar length of your
saw!
Felling is done using three cuts. First you make the
directional cuts, which consist of the top cut and the bottom
cut, then you finish with the felling cut. By placing these cuts
correctly you can control the felling direction very accurately.
Directional cuts
To make the directional cuts you begin with the top cut.
Stand to the right of the tree and cut on the pull stroke.
Next make the bottom cut so that it finishes exactly at the end
of the top cut.
The directional cuts should run 1/4 of the diameter through
the trunk and the angle between the top cut and bottom cut
should be 45°.
The line where the two cuts meet is called the directional cut
line. This line should be perfectly horizontal and at right
angles (90°) to the chosen felling direction.
WORKING TECHNIQUES
Felling cut
The felling cut is made from the opposite side of the tree and
it must be perfectly horizontal. Stand on the left side of the
tree and cut on the pull stroke.
Make the felling cut about 3-5 cm (1.5-2 inches) above the
bottom directional cut.
Finish the felling cut parallel with the directional cut line so
that the distance between them is at least 1/10 of the trunk
diameter. The uncut section of the trunk is called the felling
hinge.
The felling hinge controls the direction that the tree falls in.
All control over the felling direction is lost if the felling hinge
is too narrow or non-existent, or if the directional cuts and
felling cut are badly placed.
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English 27