To Free A Trapped Tree; To Cut Trees And Branches That Are In Tension - Husqvarna 240i Manual De Usuario

WARNING:
diameter that is more than two times larger
than the guide bar length. For this, you must
have special training.
The felling hinge
The most important procedure during tree felling is to
make the correct felling hinge. With a correct felling
hinge, you control the felling direction and make sure
that the felling procedure is safe.
The thickness of the felling hinge must be equal and a
minimum of 10% of the tree diameter.
WARNING:
incorrect or too thin, you have no control of
the felling direction.
(Fig. 87)
To make the directional cuts
1. Make the directional cuts. Run the directional cuts
1/4 of the diameter of the tree. Make a 45° angle
between the top cut and bottom cut.
a) Make the top cut first. Align the felling direction
mark (A) of the product with the felling direction
of the tree (B). Stay behind the product and keep
the tree on your right side. Cut with a pull stroke.
b) Make the bottom cut. Make sure that the end of
the bottom cut is at the same point as the end of
the top cut. (Fig. 88)
2. Make sure that the directional cut line is perfectly
horizontal and at right angles (90°) to the felling
direction. The directional cut line goes through the
point where the two directional cuts touch. (Fig. 89)
To use the safe corner method
The felling cut must be made slightly above the
directional cut.
(Fig. 90)
WARNING:
with the guide bar tip. Start to cut with the
lower section of the guide bar tip as you
make a bore cut into the trunk.
(Fig. 91)
1. If the usable cutting length is longer than the tree
diameter, do these steps (a-d).
a) Make a bore cut straight into the trunk to
complete the felling hinge width. (Fig. 92)
b) Cut on the pull stroke until ⅓ of the trunk is left.
c) Pull the guide bar 5-10 cm/2-4 in rearward.
1951 - 001 - 23.09.2022
Do not fell trees with a
If the felling hinge is
Be careful when you cut
d) Cut through the remaining of the trunk to
complete a safe corner that is 5-10 cm/2-4 in
wide. (Fig. 93)
2. If the usable cutting length is shorter than the tree
diameter, do these steps (a-d).
a) Make a bore cut straight into the trunk. The bore
cut must extend 3/5 of the tree diameter.
b) Cut on the pull stroke through the remaining
trunk. (Fig. 94)
c) Cut straight into the trunk from the other side of
the tree to complete the felling hinge.
d) Cut on the push stroke, until ⅓ of the trunk is left,
to complete the safe corner. (Fig. 95)
3. Put a wedge in the kerf straight from behind. (Fig.
96)
4. Cut off the corner to make the tree fall.
Note:
If the tree does not fall, hit the wedge until it
does.
5. When the tree starts to fall, use the path of retreat
to move away from the tree. Move a minimum of 5
m/15 ft away from the tree.

To free a trapped tree

WARNING:
remove a trapped tree and there is a high
accident risk. Keep out of the risk zone and
do not try to fell a trapped tree.
(Fig. 97)
The safest procedure is to use one of the following
winches:
• Tractor-mounted
(Fig. 98)
• Portable
(Fig. 99)

To cut trees and branches that are in tension

1. Figure out which side of the tree or branch that is in
tension.
2. Figure out where the point of maximum tension is.
(Fig. 100)
3. Examine which is the safest procedure to release the
tension.
Note:
In some situations the only safe procedure
is to use a winch and not your product.
4. Keep a position where the tree or branch can not hit
you when the tension is released. (Fig. 101)
5. Make one or more cuts of sufficient depth necessary
to decrease the tension. Cut at or near the point of
maximum tension. Make the tree or branch break at
the point of maximum tension. (Fig. 102)
It is very dangerous to
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