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•
In case of trees with a larger diameter,
a notched cut and a back cut must be
implemented (see diagram).
•
If cutting and felling is being carried
out by two or more persons simultane-
ously, the distance between the felling
and cutting persons must be at least
twice the height of the tree to be fellled.
When felling trees, ensure that no other
persons are subject to hazards and
that no material damage is caused. If
a tree should come into contact with a
power line, the supply company must
be informed immediately.
•
Dirt, stones, loose bark, nails, clips and
wires must be removed from the tree.
Do not fell any trees when a
strong or changing wind is blow-
ing, if the danger of property
damage exists or if the tree could
fall on electric wires.
Immediately after termination of
the sawing procedure, remove the
ear protection so that you can hear
hooter and alarm signals.
1. Removal of branches:
O
Remove hanging branches by
positioning the cut from above the
branch. With removal of branches,
never work higher than shoulder
level.
2. Escape area:
P
Remove the undergrowth around
the tree to ensure an easy
escape. The escape area (1)
should be around 45° either side
behind the planned felling direc-
tion (2).
3. Cutting notch (A):
Q
Make a felling notch in the direc-
tion in which you wish the tree to
fall. Start with the bottom, hori-
88
zontal cut. The cut depth should
be around 1/3 of the trunk diam-
eter. This will prevent the saw
chain or the guard rails from jam-
ming when placing the second
chamfer. Now make a slanted
saw cut from above at an angle
of roughly 45° to meet exactly
with the bottom saw cut.
Never step in front of a tree
which is notched.
4. Felling back cut (B):
Q
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 horizontally 5 cm
above the horizontal notched cut.
The back cut should be so deep
that the separation distance be-
tween the back cut and the notch
cutting line is at least 1/10 of the
trunk diameter. The part of the
stem not sawn through is called
a stay (felling gib). The stay pre-
vents the tree from turning and
falling in the wrong direction. Do
not saw through the stay.gen Sie
den Steg nicht durch.
5. As you approach the felling cut
R
on the stay the tree should start
falling. If it becomes apparent
that the tree may not fall in the re-
quired direction or is leaning back,
and the saw chain is jamming,
stop felling and use wedges made
of wood, plastic or aluminium to
open the cut and to tilt the tree in
the required felling line.
6. If the trunk diameter is larger
S
than the length of the chain bar,
make two cuts.
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