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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 in-
formed 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 blowing, 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:
Remove hanging branches by positioning
the cut from above the branch. With re-
moval of branches, never work higher than
shoulder level.
2. Escape area:
Remove the undergrowth around the tree to
ensure an easy escape. The escape area
(1) should be around 45° either side be-
hind the planned felling direction (2).
3. Cutting notch (A):
Make a felling notch in the direction in
which you wish the tree to fall. Start with
the bottom, horizontal 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 jamming when placing the
56
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):
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 between 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 prevents the tree from turning and
falling in the wrong direction. Do not saw
through the stay.
5. As you approach the felling cut
on the stay the tree should start
falling. If it becomes apparent that the tree
may not fall in the required direction or is
leaning back, and the saw chain is jam-
ming, 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
than the length of the chain bar,
make two cuts.
For safety reasons, we ad-
vise inexperienced users not
to fell any logs with a rail
length which is smaller than
the trunk diameter.
7. After carrying out of the back cut, the
tree falls by itself or with the aid of the
felling wedge or crowbar.