operation manual

GB
64 CS 4030
Working behaviour and working technique
DANGER!
Danger of fatal injury
from a falling tree!
Having no escape route
when felling a tree rep-
resents a danger of seri-
ous 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 seri-
ous and even fatal injury!
■
In order to guarantee
controlled felling of a
tree, leave a bridge be-
tween 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.
7.2 Branch lopping
Heed the following points during this work:
■
Support the chain saw against the tree trunk
during the work.
■
In the preliminary phase, leave larger, down-
ward-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 bor-
ing cuts (18).
7.3 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, with-
out cutting into the ground (20).
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).
Tree trunk is lying raised at both ends: