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20 CS 4030
DANGER!
Danger of fatal injury from a falling
tree!
Having no escape route when felling a
tree represents a danger of serious and
even fatal injury!
■
Do not start the felling work until you
are sure there is an unobstructed
escape route away from the tree to
be felled.
DANGER!
Danger of fatal injury from an
uncontrollably falling tree!
Uncontrolled falling trees can lead to
extremely serious and even fatal injury!
■
In order to guarantee controlled
felling of a tree, leave a bridge
between the undercut and the back
cut. The length of this bridge should
be approx. 1/10 of the trunk
diameter.
■
Do not carry out any felling work in
windy conditions.
14.2 Branch lopping (19 - Page 8)
Heed the following points during this work:
■ Support the chain saw against the tree trunk
during the work.
■ In the preliminary phase, leave larger,
downward-pointing branches that are
supporting the tree (19).
■ Cut off smaller branches with one cut.
■ Pay attention to branches under tension, and
saw through these from underneath upwards
in order to avoid the chain saw becoming
trapped (19).
■ Do not saw off free-hanging branches from
underneath.
■ Only experienced or trained people should
make plunge cuts, longitudinal cuts and
boring cuts (18).
14.3 Cross-cutting
Heed the following points during this work:
■ When working on a slope, always stand uphill
from the tree trunk, because it could roll away
(19).
■ Guide the chain saw so that there is no part
of your body in the extended sweep arc of
the saw chain.
■ Position the bumper spike directly adjacent to
the cut edge and allow the chain saw to pivot
about this point. Do not exert any pressure at
the end of the cut.
■ Make sure that the saw chain does not touch
the ground.
■ At the end of the cut, wait for the saw chain
to come to a halt before you remove the
chain saw.
■ Always switch off the engine of the chain saw
before you go to the next tree.
The entire length of the tree trunk is in contact
with the ground:
■ Saw through the tree trunk from above,
without cutting into the ground (20 - Page 8).
Tree trunk is lying raised at one end:
■ To prevent the chain saw becoming trapped
and the wood splintering, first saw through
1/3 of the trunk diameter from below, then
saw through the remainder from above, down
as far as the cut made from underneath (10 -
Page 7).
Tree trunk is lying raised at both ends:
To prevent the chain saw becoming trapped and
the wood splintering, first saw through 1/3 of the
trunk diameter from above, then saw through the
remainder from underneath, up as far as the cut
made from above
(11 - Page 7).
DANGER!
Danger of fatal injury due to kickback!
The operator can be fatally injured by
kickback of the appliance.
■
It is essential to comply with the
measures in order to avoid any
kickback.
Sharpen the saw chain frequently, without
removing much material while doing so. After
sharpening 3 to 4 times yourself, have the saw
chain resharpened by a specialist workshop. This
also involves resharpening the depth limiter.
Renew the saw chain as soon as the minimum
cutting tooth length of 4 mm (13) is reached.
14.4 Cutting converted timber (12 - Page 7)
Heed the following points during this work:
■ Useasecurecuttingsurface(sawingtrestle,
wedges, beams).
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