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WORKING TECHNIQUES
English 27
Felling cut
The felling cut is made from the opposite side of the tree
and it must be perfectly horizontal. Try to take a correct
position so you are able to cut on the pull stroke.
Make the felling cut about 3-5 cm (1.5-2 inches) above the
bottom directional cut.
Set the spike bumper (if one is fitted) just behind the felling
hinge
.
Use full throttle and advance the chain/bar slowly
into the tree. Make sure the tree-top does not start to
move in the opposite direction to your intended felling
direction.
Finish the felling cut parallel with the directional cut line so
that the distance betw
een them is at least 1/10 of the
tr
unk 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 narro
w or non-e
xistent, or if the directional
cuts and felling cut are badly placed.
We recommend that you use a bar that is longer than the
diameter of the tree
, so that y
ou can make the felling cut
and directional cuts with single cutting strokes. See the
Technical data section to find out which lengths of bar are
recommended for your saw.
There are methods for felling trees with a diameter larger
than the bar length.
Ho
wever these methods involve a
much greater risk that the kickback zone of the bar will
come into contact with the tree.
Freeing a tree that has fallen badly
Cutting trees and branches that are in tension
Preparations:
Work out which side is in tension and where the point of
maximum tension is (i.e
. where it would break if it was
bent even more).
Decide which is the safest way to release the tension and
whether y
ou are able to do it safely. In complicated
situations the only safe method is to put aside your chain
saw and use a winch.
General advice:
Position yourself so that you will be clear of the tree or
branch when the tension is released.
Make one or more cuts at or near the point of maximum
tension. Mak
e as many cuts of sufficient depth as
necessary to reduce the tension and make the tree or
branch break at the point of maximum tension.
Never cut straight through a tree or branch that is in
tension!
!
WARNING! Unless you have special
training we advise you not to fell trees
with a diameter larger than the bar length
of your saw!
27


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