47
GB
and fell the tree to fall into the
desired fall line.
5. Insert a felling wedge or a crow-
bar into the back cut, as soon
as the depth of cut permits this,
in order to prevent a jamming of
the chain bar.
6. If the trunk diameter is larger
than the length of the chain bar,
make two cuts.
7. After carrying out of the back cut,
the tree falls by itself or with the
aid of the felling wedge or crow-
bar.
As soon as the tree begins to fall,
pull out the saw from the section,
stop the motor, place the electric
chainsaw down and leave the
workplace using the withdrawal
path.
Pay attention to falling branches
and do not stumble.
Limbing
Limbing is the designation for the sawing
off of branches and boughs from a felled
tree.
Many accidents occur during the
removal of branches. Never cut
tree limbs when you are standing
on the log. Keep the spring-back
area in mind if branches are under
tension.
• Do not remove support branches until
after the sawing off.
• Branches under tension must be
sawed from below to above, in order
to prevent jamming of the chainsaw.
• When working on thicker branches, use
the same technique as when you are
fall. Start with the bottom, hori-
zontal cut. The cut depth should
be around 1/3 of the trunk diam-
eter. Now make a slanted saw cut
from above at an angle of roughly
45° to meet exactly with the bot-
tom saw cut.
This helps avoiding that the
chainsaw or the guide rail jams
when making the second chip
carving.
Never step in front of a tree
which is notched.
4. Felling back cut (B):
Make the back cut from the
other side of the log, where you
stand to the left of the log and
saw with the chainsaw pulling.
The back cut must run horizon-
tally 5 cm above the horizontal
notched cut.
The back cut should be so deep
that the separation distance
between the back cut and the
notch cutting line is at least 1/10
of the trunk diameter. The part
of the log not sawed through is
designated as a break dimen-
sion.
The hinge prevents the tree from
turning and falling in the wrong
direction. Do not cut through the
hinge.
When the felling cut nears the
hinge, the tree should begin to
fall. If it becomes apparent that
the tree might not fall in the
desired direction or if it bends
back, and if the chainsaw is
stuck, discontinue the felling cut
and use wooden, plastic or alu-
minium wedges to open the cut
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